ASTROSAT CZTI

Data Quality Report

Orbit 57033

Creation date: 2026-04-13T16:16:15.395267
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/AS1A14_083T14_9000006564_57033cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57033cztM0_level2_quad_clean.evt
Size (bytes)506,675,52094,999,680
Size483.2 MB 90.6 MB
Events in quadrant A3,858,661634,864
Events in quadrant B3,219,052686,458
Events in quadrant C4,247,565606,509
Events in quadrant D6,903,942476,472

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160771
B0143011
C0173291
D0251092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67712263.337764%
B67722043.012404%
C67722393.529238%
D6771136120.100428%

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 7261 6772 43 43 0.59% 0.63%
B 7262 6773 10 10 0.14% 0.15%
C 7262 6773 88 88 1.21% 1.30%
D 7261 6772 1065 1065 14.67% 15.73%

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 3 14 887966 4930.78 734 716 179.9
A 4 207 47534 260.19 734 716 179.9
A 3 245 32306 175.56 734 716 179.9
B 0 63 162338 1036.5 727 700 155.9
B 10 16 40863 257.54 727 700 155.9
B 0 213 28710 179.61 727 700 155.9
C 15 209 715487 3692.42 714 706 193.6
C 12 249 215598 1110.09 714 706 193.6
C 13 23 133922 688.17 714 706 193.6
D 12 3 3369486 18245.1 657 629 184.6
D 11 129 232761 1257.18 657 629 184.6
D 15 142 224266 1211.18 657 629 184.6

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