ASTROSAT CZTI

Data Quality Report

Orbit 20220515_A11_080T01_9000005146_level2

Creation date: 2022-06-29T09:35:40.545453
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_080T01_9000005146cztM0_level2_bc.evt modeM0/AS1A11_080T01_9000005146cztM0_level2_quad_clean.evt
Size (bytes)28,287,702,7207,838,688,960
Size26.3 GB 7.3 GB
Events in quadrant A191,966,30552,049,875
Events in quadrant B198,810,58347,890,048
Events in quadrant C178,068,16950,986,142
Events in quadrant D249,846,29248,208,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021040
B021040
C021050
D021040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114300
B0114290
C0114290
D0114280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014142340
B018654120
C013051770
D015816770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559013208013.721023%
B5590119893217.697684%
C559003156162.793545%
D558987285995.116219%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 769942 559197 974 974 0.13% 0.17%
B 769941 559082 6341 6341 0.82% 1.13%
C 769942 559069 2575 2575 0.33% 0.46%
D 769942 559080 9297 9297 1.21% 1.66%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 49651299 6851.7 31181 30491 7242.1
A 10 83 12797036 1762.82 31181 30491 7242.1
A 7 48 5886047 808.54 31181 30491 7242.1
B 5 172 43559267 7349.61 28728 28316 5922.9
B 5 63 24978173 4212.44 28728 28316 5922.9
B 5 255 6420410 1079.22 28728 28316 5922.9
C 15 214 21746573 3078.21 30064 30089 7054.9
C 9 187 11347538 1604.2 30064 30089 7054.9
C 0 10 11110204 1570.55 30064 30089 7054.9
D 8 195 24461838 3245.38 30157 29174 7528.4
D 12 227 20501796 2719.37 30157 29174 7528.4
D 1 52 16155725 2142.09 30157 29174 7528.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter