ASTROSAT CZTI

Data Quality Report

Orbit 01118

Creation date: 2024-06-27T14:07:48.508913
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_997T01_9000000214_01118cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01118cztM0_level2_quad_clean.evt
Size (bytes)1,114,395,840100,998,720
Size1.0 GB 96.3 MB
Events in quadrant A8,076,854664,475
Events in quadrant B9,164,354654,041
Events in quadrant C8,323,221635,314
Events in quadrant D7,736,803633,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288222
B0320221
C0295411
D0278411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A677580.118081%
B6775801.180812%
C6775410.605166%
D6775660.974170%

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 6945 6777 278 278 4.00% 4.10%
B 6945 6777 535 535 7.70% 7.89%
C 6945 6777 311 311 4.48% 4.59%
D 6945 6777 329 329 4.74% 4.85%

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 10 229 10686 16.96 2099 2110 505.7
A 12 243 9820 15.25 2099 2110 505.7
A 11 79 7937 11.52 2099 2110 505.7
B 2 32 681538 1332.36 2174 2186 509.9
B 15 22 59815 113.02 2174 2186 509.9
B 0 187 36595 67.48 2174 2186 509.9
C 15 241 342985 605.74 2014 2086 562.8
C 10 207 29319 48.39 2014 2086 562.8
C 3 111 28393 46.74 2014 2086 562.8
D 2 16 121533 208.21 2007 2044 573.9
D 10 125 52311 87.59 2007 2044 573.9
D 13 73 24886 39.8 2007 2044 573.9

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