ASTROSAT CZTI

Data Quality Report

Orbit 58077

Creation date: 2026-06-22T21:22:34.916861
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_031T01_9000006584_58077cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58077cztM0_level2_quad_clean.evt
Size (bytes)579,574,08080,271,360
Size552.7 MB 76.6 MB
Events in quadrant A3,068,586578,941
Events in quadrant B6,343,912543,663
Events in quadrant C3,247,878549,160
Events in quadrant D8,344,301354,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132761
B0228351
C0136321
D0287761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57881823.144437%
B5788100317.328956%
C57881432.470629%
D5788196433.932274%

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 6978 5789 96 96 1.38% 1.66%
B 6978 5789 781 781 11.19% 13.49%
C 6978 5789 86 86 1.23% 1.49%
D 6978 5788 1820 1820 26.08% 31.44%

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 10 251 484163 3000.09 650 635 161.2
A 13 248 16766 100.09 650 635 161.2
A 7 206 13884 82.2 650 635 161.2
B 10 128 3372752 25622.13 607 584 131.6
B 2 249 294071 2229.95 607 584 131.6
B 10 247 46914 352.02 607 584 131.6
C 12 252 433128 2526.48 622 616 171.2
C 9 38 215714 1256.48 622 616 171.2
C 14 254 52262 301.69 622 616 171.2
D 12 110 4417118 30827.58 499 478 143.3
D 8 160 1400475 9771.8 499 478 143.3
D 8 240 132503 921.52 499 478 143.3

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