ASTROSAT CZTI

Data Quality Report

Orbit 09258

Creation date: 2024-06-27T15:43:31.238933
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/AS1A03_091T01_9000001296_09258cztM0_level2.evt modeM0/AS1A03_091T01_9000001296_09258cztM0_level2_quad_clean.evt
Size (bytes)689,578,560121,104,000
Size657.6 MB 115.5 MB
Events in quadrant A6,329,536749,653
Events in quadrant B4,612,377762,989
Events in quadrant C4,484,210748,765
Events in quadrant D4,798,320731,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251642
B0199562
C0199862
D0209732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97342672.742963%
B97341411.448531%
C97341091.119786%
D97341521.561537%

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 10769 9736 62 62 0.58% 0.64%
B 10769 9736 1 1 0.01% 0.01%
C 10769 9736 14 14 0.13% 0.14%
D 10769 9736 47 47 0.44% 0.48%

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 8 5 1782502 7604.87 1151 1124 234.2
A 1 162 49228 205.36 1151 1124 234.2
A 15 174 23432 95.23 1151 1124 234.2
B 0 187 25927 111.33 1163 1135 222.7
B 0 214 25681 110.23 1163 1135 222.7
B 12 111 25559 109.68 1163 1135 222.7
C 14 234 71941 270.8 1128 1132 261.5
C 14 67 9391 31.58 1128 1132 261.5
C 13 61 8459 28.02 1128 1132 261.5
D 1 52 238448 849.57 1120 1090 279.4
D 2 136 157164 558.63 1120 1090 279.4
D 7 71 60577 212.92 1120 1090 279.4

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