ASTROSAT CZTI

Data Quality Report

Orbit 41158

Creation date: 2024-06-27T22:25:13.140943
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/AS1A12_037T01_9000005608_41158cztM0_level2.fits modeM0/AS1A12_037T01_9000005608_41158cztM0_level2_quad_clean.evt
Size (bytes)110,491,20019,753,920
Size105.4 MB 18.8 MB
Events in quadrant A725,684139,076
Events in quadrant B821,174141,956
Events in quadrant C1,427,192102,269
Events in quadrant D1,020,367124,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028742
B031361
C050141
D038231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119540.334728%
B1195282.343096%
C119533127.698745%
D119520.167364%

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 3258 1196 1 1 0.03% 0.08%
B 3258 1196 17 17 0.52% 1.42%
C 3258 1196 275 275 8.44% 22.99%
D 3258 1196 1 1 0.03% 0.08%

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 83 169045 5374.27 143 140 31.4
A 13 254 1934 57.08 143 140 31.4
A 3 137 1573 45.6 143 140 31.4
B 0 245 236470 8087.17 140 136 29.2
B 7 202 25462 866.64 140 136 29.2
B 12 111 3504 115.25 140 136 29.2
C 9 54 718536 23754.29 120 121 30.2
C 0 10 166533 5502.39 120 121 30.2
C 15 214 49564 1634.83 120 121 30.2
D 2 16 459591 12955.19 138 134 35.5
D 13 249 17313 484.39 138 134 35.5
D 2 249 7152 197.88 138 134 35.5

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