ASTROSAT CZTI

Data Quality Report

Orbit 59035

Creation date: 2026-08-27T23:25:50.314024
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_004T02_9000006600_59035cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59035cztM0_level2_quad_clean.evt
Size (bytes)876,994,56081,000,000
Size836.4 MB 77.2 MB
Events in quadrant A3,745,947669,487
Events in quadrant B7,311,186591,622
Events in quadrant C6,334,206562,974
Events in quadrant D14,557,375164,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156612
B0262422
C0235037
D0478252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66441922.889825%
B6645151422.784048%
C6644105215.833835%
D6644506776.264299%

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 8994 6646 158 158 1.76% 2.38%
B 8995 6647 1000 1000 11.12% 15.04%
C 8994 6646 1019 1019 11.33% 15.33%
D 8993 6645 4428 4428 49.24% 66.64%

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 15 233 464882 2488.23 748 728 186.5
A 3 14 193181 1031.7 748 728 186.5
A 10 251 62615 331.76 748 728 186.5
B 2 249 4062485 28167.88 675 650 144.2
B 4 236 380203 2632.11 675 650 144.2
B 5 185 55357 379.38 675 650 144.2
C 15 219 2943431 15286.9 694 689 192.5
C 15 198 400168 2075.21 694 689 192.5
C 4 5 198462 1027.39 694 689 192.5
D 12 1 12414443 126170.8 332 316 98.4
D 8 160 225383 2287.47 332 316 98.4
D 3 224 204501 2075.23 332 316 98.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct