ASTROSAT CZTI

Data Quality Report

Orbit 38876

Creation date: 2024-06-27T21:57:41.690272
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_093T01_9000005410_38876cztM0_level2.fits modeM0/AS1A12_093T01_9000005410_38876cztM0_level2_quad_clean.evt
Size (bytes)652,052,160174,124,800
Size621.8 MB 166.1 MB
Events in quadrant A5,388,9331,173,367
Events in quadrant B5,505,7061,182,382
Events in quadrant C5,004,9511,142,179
Events in quadrant D7,417,3721,042,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223823
B0233392
C0213872
D0290462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10573250.236451%
B105731211.144424%
C10573120.113497%
D105732822.667171%

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 10575 2 2 0.01% 0.02%
B 13559 10575 60 60 0.44% 0.57%
C 13559 10575 7 7 0.05% 0.07%
D 13559 10575 293 293 2.16% 2.77%

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 746026 3113.86 1190 1164 239.2
A 9 143 26454 105.72 1190 1164 239.2
A 13 254 17921 70.05 1190 1164 239.2
B 4 251 487888 2130.68 1173 1138 228.4
B 4 171 226202 985.19 1173 1138 228.4
B 5 184 58960 253.11 1173 1138 228.4
C 15 214 433573 1597.03 1160 1165 270.8
C 14 254 32559 115.95 1160 1165 270.8
C 0 10 14409 48.91 1160 1165 270.8
D 12 227 825440 2971.81 1153 1123 277.4
D 12 235 571761 2057.25 1153 1123 277.4
D 5 222 461024 1658.03 1153 1123 277.4

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