ASTROSAT CZTI

Data Quality Report

Orbit 22395

Creation date: 2024-06-27T18:40:16.065116
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_007T04_9000003310_22395cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22395cztM0_level2_quad_clean.evt
Size (bytes)494,570,88090,884,160
Size471.7 MB 86.7 MB
Events in quadrant A3,484,827570,150
Events in quadrant B3,645,757578,912
Events in quadrant C3,555,356551,431
Events in quadrant D3,790,119537,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152382
B0155572
C0153382
D0161862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7387620.839312%
B73871111.502640%
C73871091.475565%
D7387871.177745%

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 9367 7388 0 0 0.00% 0.00%
B 9367 7388 1 1 0.01% 0.01%
C 9367 7389 0 0 0.00% 0.00%
D 9367 7388 20 20 0.21% 0.27%

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 10905 55.44 903 884 180.8
A 0 226 7769 38.09 903 884 180.8
A 3 137 7651 37.44 903 884 180.8
B 3 64 35142 199.36 908 883 171.8
B 0 190 26975 151.84 908 883 171.8
B 12 111 20886 116.4 908 883 171.8
C 14 238 138302 668.17 875 880 205.7
C 0 10 6461 27.14 875 880 205.7
C 13 61 6076 25.26 875 880 205.7
D 2 136 159155 750.62 877 852 210.9
D 12 227 140284 661.14 877 852 210.9
D 1 52 86263 404.99 877 852 210.9

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