ASTROSAT CZTI

Data Quality Report

Orbit 53226

Creation date: 2025-08-01T11:46:55.716923
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/AS1C09_011T06_9000006490_53226cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53226cztM0_level2_quad_clean.evt
Size (bytes)531,253,44089,640,000
Size506.6 MB 85.5 MB
Events in quadrant A3,287,509606,064
Events in quadrant B3,779,578629,426
Events in quadrant C7,236,863494,455
Events in quadrant D4,859,046532,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148581
B0160201
C0260821
D0191461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471711.097203%
B64722784.295426%
C6472110917.135352%
D64723465.346106%

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 7191 6472 25 25 0.35% 0.39%
B 7192 6473 163 163 2.27% 2.52%
C 7192 6473 949 949 13.20% 14.66%
D 7192 6473 299 299 4.16% 4.62%

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 3 62 187732 1150.17 654 637 162.7
A 3 27 98272 600.21 654 637 162.7
A 12 80 87337 532.99 654 637 162.7
B 2 249 878899 6407.71 643 624 137.1
B 4 81 128666 934.17 643 624 137.1
B 8 128 54737 394.8 643 624 137.1
C 15 224 1460104 9023.17 585 579 161.8
C 15 165 1387342 8573.34 585 579 161.8
C 7 80 742258 4585.26 585 579 161.8
D 6 239 557596 3187.68 617 592 174.7
D 11 176 450628 2575.51 617 592 174.7
D 15 125 404496 2311.5 617 592 174.7

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