ASTROSAT CZTI

Data Quality Report

Orbit 57185

Creation date: 2026-04-23T22:26:01.282369
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_57185cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57185cztM0_level2_quad_clean.evt
Size (bytes)413,758,08086,083,200
Size394.6 MB 82.1 MB
Events in quadrant A2,722,604578,999
Events in quadrant B4,320,188576,770
Events in quadrant C4,619,191505,101
Events in quadrant D3,179,116519,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128291
B0171411
C0181061
D0137561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101530.868710%
B61015368.785445%
C61015158.441239%
D6101440.721193%

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 6996 6102 31 31 0.44% 0.51%
B 6996 6102 334 334 4.77% 5.47%
C 6996 6101 475 475 6.79% 7.79%
D 6996 6102 45 45 0.64% 0.74%

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 10 251 179998 1122.56 644 627 159.8
A 3 14 14142 84.58 644 627 159.8
A 13 248 11462 67.81 644 627 159.8
B 5 185 1228647 9268.27 614 592 132.5
B 10 16 227157 1709.91 614 592 132.5
B 0 199 109548 822.3 614 592 132.5
C 15 224 2013602 12226.72 595 589 164.6
C 2 12 119555 722.58 595 589 164.6
C 12 2 50608 303.81 595 589 164.6
D 2 249 288697 1648.68 617 588 174.8
D 12 33 150104 855.6 617 588 174.8
D 8 240 107999 614.65 617 588 174.8

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