ASTROSAT CZTI

Data Quality Report

Orbit 57147

Creation date: 2026-04-21T08:40:04.819271
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_083T10_9000006566_57147cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57147cztM0_level2_quad_clean.evt
Size (bytes)470,099,52093,548,160
Size448.3 MB 89.2 MB
Events in quadrant A3,032,683644,367
Events in quadrant B4,966,775609,563
Events in quadrant C3,730,026584,905
Events in quadrant D5,173,221546,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136742
B0192722
C0156052
D0196702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416410.639027%
B641684713.201372%
C64163345.205736%
D64163295.127805%

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 7601 6417 10 10 0.13% 0.16%
B 7601 6417 632 632 8.31% 9.85%
C 7601 6417 274 274 3.60% 4.27%
D 7601 6417 284 284 3.74% 4.43%

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 208028 1187.72 712 693 174.6
A 8 6 36521 205.24 712 693 174.6
A 4 3 12372 66.9 712 693 174.6
B 10 16 2020489 14605.01 649 626 138.3
B 10 247 199890 1440.82 649 626 138.3
B 0 63 56936 407.16 649 626 138.3
C 15 198 669719 3678.72 676 670 181.9
C 12 252 109825 600.18 676 670 181.9
C 2 12 80172 437.14 676 670 181.9
D 15 142 1090985 5756.6 671 639 189.4
D 12 33 542779 2862.29 671 639 189.4
D 2 120 224879 1183.9 671 639 189.4

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