ASTROSAT CZTI

Data Quality Report

Orbit 34585

Creation date: 2022-02-19T22:53:39.789531
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/AS1A05_176T05_9000004944_34585cztM0_level2.evt modeM0/AS1A05_176T05_9000004944_34585cztM0_level2_quad_clean.evt
Size (bytes)230,791,68018,175,680
Size220.1 MB 17.3 MB
Events in quadrant A1,021,635102,762
Events in quadrant B1,123,217103,387
Events in quadrant C1,146,140102,394
Events in quadrant D3,554,67489,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043591
B046211
C045761
D0120061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209230.143403%
B209290.430210%
C2092241.147228%
D209265131.118547%

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 2092 2092 1 1 0.05% 0.05%
B 2092 2092 2 2 0.10% 0.10%
C 2092 2092 17 17 0.81% 0.81%
D 2092 2092 644 644 30.78% 30.78%

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 9 143 22515 430.07 250 245 51.8
A 10 83 21575 411.91 250 245 51.8
A 13 254 3728 67.26 250 245 51.8
B 0 189 54063 1075.99 248 242 50.0
B 5 172 52771 1050.16 248 242 50.0
B 4 232 13765 270.35 248 242 50.0
C 15 214 88611 1536.04 242 243 57.5
C 0 207 58224 1007.84 242 243 57.5
C 0 10 44054 761.54 242 243 57.5
D 8 195 1738835 28278.25 220 214 61.5
D 13 249 332708 5407.93 220 214 61.5
D 7 223 182853 2970.58 220 214 61.5

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