ASTROSAT CZTI

Data Quality Report

Orbit 57219

Creation date: 2026-04-29T23:48:00.932180
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_070T08_9000006568_57219cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57219cztM0_level2_quad_clean.evt
Size (bytes)477,282,24085,340,160
Size455.2 MB 81.4 MB
Events in quadrant A3,033,514570,309
Events in quadrant B3,745,333603,173
Events in quadrant C6,716,820469,032
Events in quadrant D3,675,829496,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137993
B0155602
C0244812
D0156352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63791292.022261%
B63792533.966139%
C6379112717.667346%
D63791111.740085%

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 7838 6654 74 74 0.94% 1.11%
B 7838 6653 110 110 1.40% 1.65%
C 7838 6649 848 848 10.82% 12.75%
D 7838 6654 106 106 1.35% 1.59%

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 0 128 264713 1556.6 689 671 169.6
A 3 95 69511 405.83 689 671 169.6
A 13 254 11380 63.13 689 671 169.6
B 10 16 371172 2538.7 681 656 145.9
B 5 185 166124 1133.75 681 656 145.9
B 10 247 143470 978.53 681 656 145.9
C 15 224 3400827 20028.76 618 610 169.8
C 12 254 633892 3730.31 618 610 169.8
C 15 216 145150 851.4 618 610 169.8
D 8 240 640504 3389.94 659 628 188.8
D 2 120 120726 636.25 659 628 188.8
D 7 96 108762 572.87 659 628 188.8

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