ASTROSAT CZTI

Data Quality Report

Orbit 20220729_C07_001T10_9000005252_level2

Creation date: 2022-08-01T13:17:13.533040
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/AS1C07_001T10_9000005252cztM0_level2_bc.evt modeM0/AS1C07_001T10_9000005252cztM0_level2_quad_clean.evt
Size (bytes)4,202,233,9201,389,470,400
Size3.9 GB 1.3 GB
Events in quadrant A22,597,9419,345,351
Events in quadrant B36,817,0498,882,292
Events in quadrant C25,158,8149,352,632
Events in quadrant D37,037,7068,803,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01823860
B02482130
C01871000
D02395830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017040
B017040
C017040
D017040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A831627170.862173%
B8316173938.889984%
C831629711.167601%
D8316258397.021236%

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 115646 83179 143 143 0.12% 0.17%
B 115646 83155 546 546 0.47% 0.66%
C 115646 83164 237 237 0.20% 0.28%
D 115646 83157 1610 1610 1.39% 1.94%

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 10 83 2998301 3199.67 4227 4168 935.8
A 15 237 1057556 1125.7 4227 4168 935.8
A 12 189 619350 657.41 4227 4168 935.8
B 5 184 12314505 15283.89 4075 3994 805.5
B 4 171 1740669 2156.14 4075 3994 805.5
B 5 172 1414344 1750.99 4075 3994 805.5
C 15 214 3388323 3486.04 4187 4166 970.8
C 0 10 1544185 1586.38 4187 4166 970.8
C 14 254 1286153 1320.58 4187 4166 970.8
D 12 17 11451496 11389.76 4118 4005 1005.1
D 2 250 2667599 2650.16 4118 4005 1005.1
D 2 249 892639 884.15 4118 4005 1005.1

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