ASTROSAT CZTI

Data Quality Report

Orbit 42685

Creation date: 2024-06-27T22:43:01.848274
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/AS1A05_013T01_9000005822_42685cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42685cztM0_level2_quad_clean.evt
Size (bytes)698,941,440170,890,560
Size666.6 MB 163.0 MB
Events in quadrant A5,831,9601,156,148
Events in quadrant B5,006,1841,167,893
Events in quadrant C5,533,1671,124,909
Events in quadrant D8,667,539980,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236963
B0224443
C0233963
D0331263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10755600.557880%
B10755610.567178%
C10755300.278940%
D107558207.624361%

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 13559 10757 38 38 0.28% 0.35%
B 13559 10757 42 42 0.31% 0.39%
C 13559 10757 15 15 0.11% 0.14%
D 13559 10757 825 825 6.08% 7.67%

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 1089584 4530.51 1172 1148 240.2
A 13 248 101895 419.35 1172 1148 240.2
A 15 237 84225 345.8 1172 1148 240.2
B 15 32 94631 418.86 1159 1128 223.2
B 4 141 66590 293.25 1159 1128 223.2
B 0 245 53468 234.46 1159 1128 223.2
C 15 214 445863 1677.42 1134 1141 265.1
C 8 79 290862 1092.78 1134 1141 265.1
C 14 254 161292 604.06 1134 1141 265.1
D 1 47 1884096 6970.54 1103 1072 270.1
D 2 249 1195473 4421.41 1103 1072 270.1
D 1 52 922334 3410.31 1103 1072 270.1

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