ASTROSAT CZTI

Data Quality Report

Orbit 25031

Creation date: 2024-06-27T19:12:58.912197
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/AS1A07_134T03_9000003670_25031cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25031cztM0_level2_quad_clean.evt
Size (bytes)733,176,000128,707,200
Size699.2 MB 122.7 MB
Events in quadrant A4,144,557834,833
Events in quadrant B4,246,332853,124
Events in quadrant C4,304,497821,660
Events in quadrant D8,918,497782,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180090
B0182380
C0181920
D0328012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87223163.623022%
B87233393.886278%
C87243343.828519%
D87236066.947151%

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 14120 8724 0 0 0.00% 0.00%
B 14121 8725 4 4 0.03% 0.05%
C 14121 8726 0 0 0.00% 0.00%
D 14120 8725 280 280 1.98% 3.21%

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 13 254 10932 45.71 1074 1050 216.2
A 3 137 10148 42.08 1074 1050 216.2
A 0 226 9170 37.56 1074 1050 216.2
B 5 172 41373 195.11 1067 1039 206.7
B 12 111 25859 120.06 1067 1039 206.7
B 11 111 23480 108.55 1067 1039 206.7
C 14 238 162437 659.56 1039 1046 244.7
C 7 247 69535 279.9 1039 1046 244.7
C 0 239 12952 48.66 1039 1046 244.7
D 8 195 3226386 12798.41 1041 1010 252.0
D 1 52 1672833 6633.85 1041 1010 252.0
D 2 244 64623 252.42 1041 1010 252.0

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