ASTROSAT CZTI

Data Quality Report

Orbit 58653

Creation date: 2026-07-31T17:01:57.597523
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_004T06_9000006594_58653cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58653cztM0_level2_quad_clean.evt
Size (bytes)599,800,32097,479,360
Size572.0 MB 93.0 MB
Events in quadrant A4,656,688646,409
Events in quadrant B4,185,021693,086
Events in quadrant C3,576,583638,723
Events in quadrant D9,236,765482,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186922
B0173382
C0157062
D03231519

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70543895.514602%
B70544436.280125%
C70542112.991211%
D7051187926.648702%

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 7889 7054 267 267 3.38% 3.79%
B 7889 7054 138 138 1.75% 1.96%
C 7889 7054 56 56 0.71% 0.79%
D 7889 7053 1621 1621 20.55% 22.98%

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 17 1129584 5873.52 785 762 192.2
A 10 251 407501 2116.36 785 762 192.2
A 3 245 44278 226.42 785 762 192.2
B 5 185 866702 5227.12 769 739 165.7
B 12 0 127966 767.96 769 739 165.7
B 8 234 36200 214.05 769 739 165.7
C 13 3 237589 1139.24 762 754 207.9
C 12 252 225724 1082.17 762 754 207.9
C 15 217 58139 276.04 762 754 207.9
D 11 129 4155826 21269.08 682 651 195.4
D 8 240 1355286 6933.97 682 651 195.4
D 2 249 345975 1767.61 682 651 195.4

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