ASTROSAT CZTI

Data Quality Report

Orbit 55539

Creation date: 2026-01-03T09:58:10.369116
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_099T01_9000006536_55539cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55539cztM0_level2_quad_clean.evt
Size (bytes)457,799,04097,381,440
Size436.6 MB 92.9 MB
Events in quadrant A3,560,468638,878
Events in quadrant B3,229,225684,528
Events in quadrant C4,152,645601,201
Events in quadrant D5,469,106544,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156320
B0148830
C0171760
D0211290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68811081.569539%
B6881540.784770%
C68811442.092719%
D68825548.049985%

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 6881 6881 82 82 1.19% 1.19%
B 6881 6881 35 35 0.51% 0.51%
C 6881 6881 116 116 1.69% 1.69%
D 6882 6882 497 497 7.22% 7.22%

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 8 353043 1951.94 720 700 180.5
A 4 159 195474 1079.03 720 700 180.5
A 4 3 67053 367.59 720 700 180.5
B 0 171 88551 572.38 711 683 153.5
B 10 247 86036 555.99 711 683 153.5
B 5 236 70243 453.12 711 683 153.5
C 9 38 951620 4982.83 696 687 190.8
C 12 250 138502 722.14 696 687 190.8
C 13 3 91284 474.72 696 687 190.8
D 11 129 1780301 9132.76 684 653 194.9
D 6 239 493648 2529.94 684 653 194.9
D 2 31 94953 483.93 684 653 194.9

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