ASTROSAT CZTI

Data Quality Report

Orbit 54575

Creation date: 2025-10-30T06:58:12.245142
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_127T09_9000006520_54575cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54575cztM0_level2_quad_clean.evt
Size (bytes)500,469,12094,832,640
Size477.3 MB 90.4 MB
Events in quadrant A4,102,758634,081
Events in quadrant B4,113,169667,984
Events in quadrant C3,595,443605,293
Events in quadrant D6,213,988514,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165912
B0168182
C0153722
D0230363

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64422343.632412%
B64423695.728035%
C64421672.592363%
D644184413.103555%

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 7587 6442 147 147 1.94% 2.28%
B 7587 6442 156 156 2.06% 2.42%
C 7587 6443 119 119 1.57% 1.85%
D 7586 6442 717 717 9.45% 11.13%

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 11 3 640290 3602.32 709 690 177.6
A 3 14 507438 2854.08 709 690 177.6
A 14 235 77342 431.72 709 690 177.6
B 8 234 407543 2700.4 701 675 150.7
B 0 173 276812 1832.73 701 675 150.7
B 0 213 133069 878.7 701 675 150.7
C 13 3 641339 3330.01 694 688 192.4
C 4 5 73736 379.69 694 688 192.4
C 14 254 49526 253.85 694 688 192.4
D 15 94 2326942 12387.27 659 628 187.8
D 3 12 859652 4574.17 659 628 187.8
D 8 160 118790 629.19 659 628 187.8

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