ASTROSAT CZTI

Data Quality Report

Orbit 58453

Creation date: 2026-07-18T04:19:27.307773
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_045T01_9000006590_58453cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58453cztM0_level2_quad_clean.evt
Size (bytes)381,772,80095,158,080
Size364.1 MB 90.7 MB
Events in quadrant A2,871,701633,279
Events in quadrant B3,816,042657,437
Events in quadrant C3,095,110597,394
Events in quadrant D3,860,866555,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130832
B0156512
C0137713
D0158442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271240.382714%
B62713145.007176%
C6270951.515152%
D62701151.834131%

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 7461 6272 9 9 0.12% 0.14%
B 7461 6271 228 228 3.06% 3.64%
C 7460 6271 59 59 0.79% 0.94%
D 7460 6271 109 109 1.46% 1.74%

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 80 75852 431.06 701 684 174.4
A 3 14 23270 129.52 701 684 174.4
A 4 3 12104 65.49 701 684 174.4
B 5 172 610312 4174.2 685 662 146.1
B 5 185 138223 941.86 685 662 146.1
B 1 159 84993 577.4 685 662 146.1
C 1 12 161111 860.35 676 671 186.5
C 14 245 65882 349.69 676 671 186.5
C 4 5 51803 274.19 676 671 186.5
D 8 240 815892 4299.22 666 635 189.6
D 12 248 100243 525.28 666 635 189.6
D 2 153 83266 435.75 666 635 189.6

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