ASTROSAT CZTI

Data Quality Report

Orbit 57336

Creation date: 2026-05-04T01:36:34.180812
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_102T01_9000006572_57336cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57336cztM0_level2_quad_clean.evt
Size (bytes)495,976,32095,264,640
Size473.0 MB 90.9 MB
Events in quadrant A2,893,397649,241
Events in quadrant B2,955,161696,822
Events in quadrant C6,515,623545,315
Events in quadrant D5,497,157545,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342790
B01339880
C024060158
D020877159

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413470.732886%
B6417450.701262%
C641491014.187714%
D64095228.144796%

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 7620 6430 13 13 0.17% 0.20%
B 7627 6427 4 4 0.05% 0.06%
C 7616 6423 753 753 9.89% 11.72%
D 7626 6422 384 384 5.04% 5.98%

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 0 12 106901 608.93 707 689 174.4
A 3 245 11361 61.18 707 689 174.4
A 13 254 9298 49.36 707 689 174.4
B 0 197 35173 230.09 700 675 149.9
B 0 213 27399 178.24 700 675 149.9
B 4 201 18882 121.43 700 675 149.9
C 15 224 3420313 19596.98 638 630 174.5
C 12 252 309488 1769.96 638 630 174.5
C 14 254 136084 776.24 638 630 174.5
D 3 224 2245930 12119.04 652 622 185.3
D 8 240 346321 1865.91 652 622 185.3
D 2 249 166228 893.86 652 622 185.3

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