ASTROSAT CZTI

Data Quality Report

Orbit 58513

Creation date: 2026-07-22T05:21:40.331692
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_044T04_9000006592_58513cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58513cztM0_level2_quad_clean.evt
Size (bytes)407,802,24096,730,560
Size388.9 MB 92.2 MB
Events in quadrant A3,426,787642,142
Events in quadrant B3,354,454692,687
Events in quadrant C3,294,250606,571
Events in quadrant D4,526,996545,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145452
B0142772
C0143812
D0179662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335360.568272%
B63351221.925809%
C63351241.957380%
D63353896.140489%

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 7585 6336 21 21 0.28% 0.33%
B 7585 6336 57 57 0.75% 0.90%
C 7585 6336 95 95 1.25% 1.50%
D 7585 6336 361 361 4.76% 5.70%

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 12 114 534625 3030.17 710 693 176.2
A 10 17 48299 270.17 710 693 176.2
A 11 31 27221 150.55 710 693 176.2
B 5 185 140282 917.62 707 682 152.1
B 4 171 121887 796.7 707 682 152.1
B 7 252 88390 576.52 707 682 152.1
C 4 5 349577 1835.96 689 682 190.0
C 9 38 84279 439.91 689 682 190.0
C 12 249 67411 351.14 689 682 190.0
D 3 12 1333598 7006.2 661 629 190.3
D 8 240 242487 1271.23 661 629 190.3
D 2 153 195316 1023.29 661 629 190.3

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