ASTROSAT CZTI

Data Quality Report

Orbit 59140

Creation date: 2026-09-02T13:05:01.194455
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/AS1T05_264T01_9000006602_59140cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59140cztM0_level2_quad_clean.evt
Size (bytes)750,032,64085,055,040
Size715.3 MB 81.1 MB
Events in quadrant A3,522,176641,970
Events in quadrant B4,045,212691,941
Events in quadrant C3,290,582642,549
Events in quadrant D16,377,541124,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153102
B0165982
C0146302
D0532212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67991241.823798%
B67992774.074129%
C6799510.750110%
D6799550180.908957%

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 7706 6861 95 95 1.23% 1.38%
B 7706 6861 140 140 1.82% 2.04%
C 7706 6861 30 30 0.39% 0.44%
D 7705 6824 5424 5424 70.40% 79.48%

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 361249 1957.58 751 734 184.2
A 3 14 114291 616.61 751 734 184.2
A 10 251 86166 463.89 751 734 184.2
B 5 236 456058 2840.91 744 718 160.3
B 4 236 414689 2582.81 744 718 160.3
B 5 185 108130 670.15 744 718 160.3
C 12 252 118602 573.34 740 732 205.6
C 14 254 94598 456.58 740 732 205.6
C 7 255 49095 235.25 740 732 205.6
D 12 1 14567690 165390.8 299 285 88.1
D 12 110 325834 3696.12 299 285 88.1
D 8 129 83969 950.1 299 285 88.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct