ASTROSAT CZTI

Data Quality Report

Orbit 37438

Creation date: 2024-06-27T21:40:00.146694
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/AS1A09_002T01_9000005322_37438cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37438cztM0_level2_quad_clean.evt
Size (bytes)472,870,08090,172,800
Size451.0 MB 86.0 MB
Events in quadrant A3,441,444577,920
Events in quadrant B3,558,843580,104
Events in quadrant C3,163,976598,869
Events in quadrant D3,756,711561,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141983
B0144502
C0129672
D0150832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5884280.475867%
B58842043.467029%
C5884741.257648%
D58842323.942896%

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 7318 5885 14 14 0.19% 0.24%
B 7318 5885 132 132 1.80% 2.24%
C 7318 5885 54 54 0.74% 0.92%
D 7318 5885 233 233 3.18% 3.96%

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 15 222 434516 3249.58 660 646 133.5
A 10 83 298945 2234.19 660 646 133.5
A 9 143 77880 578.46 660 646 133.5
B 4 171 423910 3410.66 650 633 124.1
B 5 184 277192 2228.44 650 633 124.1
B 15 35 62714 500.23 650 633 124.1
C 15 214 266970 1778.48 646 651 149.7
C 14 254 181459 1207.44 646 651 149.7
C 0 10 104028 690.35 646 651 149.7
D 13 249 466865 3010.99 639 623 154.8
D 12 233 266423 1716.53 639 623 154.8
D 2 249 162779 1047.2 639 623 154.8

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