ASTROSAT CZTI

Data Quality Report

Orbit 34253

Creation date: 2022-07-18T14:58:42.799348
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/AS1A11_059T09_9000004888_34253cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34253cztM0_level2_quad_clean.evt
Size (bytes)862,300,800121,659,840
Size822.4 MB 116.0 MB
Events in quadrant A4,551,262774,518
Events in quadrant B5,807,947779,292
Events in quadrant C6,657,167720,513
Events in quadrant D8,420,409714,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202880
B0237740
C0261830
D0320690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10032200.199362%
B100322452.442185%
C100325525.502392%
D100326236.210128%

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 13046 10034 5 5 0.04% 0.05%
B 13046 10034 147 147 1.13% 1.47%
C 13046 10034 331 331 2.54% 3.30%
D 13046 10034 574 574 4.40% 5.72%

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 9 143 56474 239.48 1148 1125 231.1
A 10 83 27924 115.95 1148 1125 231.1
A 13 254 18040 73.19 1148 1125 231.1
B 5 172 776588 3569.14 1132 1102 217.3
B 0 189 323346 1483.11 1132 1102 217.3
B 4 251 92530 420.79 1132 1102 217.3
C 14 254 1052883 4273.2 1073 1079 246.1
C 0 207 452671 1834.7 1073 1079 246.1
C 0 10 443171 1796.1 1073 1079 246.1
D 8 195 1755567 6572.08 1086 1054 267.0
D 12 227 1047190 3918.63 1086 1054 267.0
D 7 80 698054 2610.83 1086 1054 267.0

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