ASTROSAT CZTI

Data Quality Report

Orbit 55964

Creation date: 2026-02-06T00:28:36.945299
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_066T02_9000006546_55964cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55964cztM0_level2_quad_clean.evt
Size (bytes)395,804,16093,890,880
Size377.5 MB 89.5 MB
Events in quadrant A3,795,386609,398
Events in quadrant B3,784,247643,622
Events in quadrant C3,117,980578,386
Events in quadrant D3,441,526552,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157641
B0158221
C0144011
D0148341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65811362.066555%
B65821682.552416%
C6582901.367366%
D65821011.534488%

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 7356 6582 90 90 1.22% 1.37%
B 7357 6583 89 89 1.21% 1.35%
C 7357 6583 56 56 0.76% 0.85%
D 7357 6583 66 66 0.90% 1.00%

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 7 64 881111 5108.77 696 678 172.3
A 4 78 46723 267.18 696 678 172.3
A 12 115 45367 259.31 696 678 172.3
B 2 249 707229 4804.63 683 659 147.1
B 0 199 159942 1083.11 683 659 147.1
B 7 0 65251 439.22 683 659 147.1
C 13 3 249182 1352.84 671 666 183.7
C 12 249 84436 456.02 671 666 183.7
C 15 199 73356 395.7 671 666 183.7
D 11 129 262071 1363.07 673 644 191.8
D 7 96 196466 1021.01 673 644 191.8
D 7 129 83950 434.35 673 644 191.8

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