ASTROSAT CZTI

Data Quality Report

Orbit 30735

Creation date: 2024-06-27T20:19:02.955314
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/AS1A10_071T11_9000004436_30735cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30735cztM0_level2_quad_clean.evt
Size (bytes)689,688,000108,535,680
Size657.7 MB 103.5 MB
Events in quadrant A3,850,451713,337
Events in quadrant B5,973,896708,360
Events in quadrant C4,145,265676,864
Events in quadrant D6,400,195655,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162231
B0234701
C0169241
D0244681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76552383.109079%
B76553634.741999%
C76553144.101894%
D76554105.355976%

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 7740 7656 0 0 0.00% 0.00%
B 7740 7655 2 2 0.03% 0.03%
C 7740 7655 8 8 0.10% 0.10%
D 7740 7655 240 240 3.10% 3.14%

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 13968 63.53 997 975 204.5
A 3 137 10048 44.36 997 975 204.5
A 0 226 8425 36.43 997 975 204.5
B 6 159 2075268 10855.75 972 945 191.1
B 5 172 40444 206.71 972 945 191.1
B 12 111 23464 117.85 972 945 191.1
C 3 233 269312 1185.65 946 952 226.3
C 14 238 149851 657.86 946 952 226.3
C 10 22 20125 84.71 946 952 226.3
D 8 195 1666133 6627.79 954 934 251.2
D 10 253 612284 2433.28 954 934 251.2
D 12 227 191982 760.41 954 934 251.2

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