ASTROSAT CZTI

Data Quality Report

Orbit 05479

Creation date: 2024-06-27T14:55:41.203624
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/AS1T01_138T01_9000000698_05479cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05479cztM0_level2_quad_clean.evt
Size (bytes)666,129,600104,883,840
Size635.3 MB 100.0 MB
Events in quadrant A4,841,075622,642
Events in quadrant B5,048,915628,604
Events in quadrant C4,457,365633,582
Events in quadrant D5,154,185604,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02149917
B0215323
C02059217
D0222647

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99113363.390173%
B99152932.955119%
C99082562.583771%
D99132983.006154%

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 10310 9918 40 40 0.39% 0.40%
B 10310 9919 2 2 0.02% 0.02%
C 10310 9919 0 0 0.00% 0.00%
D 10310 9919 60 60 0.58% 0.60%

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 15 174 303087 1266.56 1153 1123 238.4
A 0 50 74988 309.82 1153 1123 238.4
A 13 6 16081 62.74 1153 1123 238.4
B 15 204 294855 1301.88 1165 1136 225.6
B 11 51 120962 531.12 1165 1136 225.6
B 15 54 26029 110.34 1165 1136 225.6
C 9 247 18258 65.22 1128 1129 262.6
C 8 128 15278 53.87 1128 1129 262.6
C 13 61 9094 30.33 1128 1129 262.6
D 2 33 201223 719.3 1131 1095 278.2
D 8 195 192537 688.08 1131 1095 278.2
D 2 136 173356 619.14 1131 1095 278.2

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