ASTROSAT CZTI

Data Quality Report

Orbit 00993

Creation date: 2024-06-27T14:05:52.303326
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/AS1P01_998T02_9000000190_00993cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_00993cztM0_level2_quad_clean.evt
Size (bytes)802,644,48081,057,600
Size765.5 MB 77.3 MB
Events in quadrant A5,741,658537,071
Events in quadrant B6,027,562546,777
Events in quadrant C5,780,226523,804
Events in quadrant D6,439,395509,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204961
B0212981
C0205961
D0225834

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4804140.291424%
B4804120.249792%
C480480.166528%
D4803691.436602%

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 5669 4805 107 107 1.89% 2.23%
B 5669 4805 151 151 2.66% 3.14%
C 5669 4805 103 103 1.82% 2.14%
D 5668 4804 526 526 9.28% 10.95%

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 15 233 17540 44.66 1488 1497 359.2
A 15 127 7853 17.69 1488 1497 359.2
A 11 79 5773 11.9 1488 1497 359.2
B 7 221 76350 204.55 1542 1546 365.7
B 5 249 41913 110.38 1542 1546 365.7
B 12 52 21964 55.83 1542 1546 365.7
C 15 241 228139 580.39 1402 1451 390.6
C 3 79 22284 53.34 1402 1451 390.6
C 3 111 21871 52.28 1402 1451 390.6
D 12 188 941226 2271.13 1367 1415 413.8
D 1 83 185556 444.99 1367 1415 413.8
D 1 4 109137 260.32 1367 1415 413.8

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