ASTROSAT CZTI

Data Quality Report

Orbit 20191204_A07_112T01_9000003360_level2

Creation date: 2019-12-06T15:03:13.273816
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_112T01_9000003360cztM0_level2_bc.evt modeM0/AS1A07_112T01_9000003360cztM0_level2_quad_clean.evt
Size (bytes)3,364,292,1601,152,380,160
Size3.1 GB 1.1 GB
Events in quadrant A19,528,6407,340,843
Events in quadrant B20,286,9217,448,404
Events in quadrant C19,239,2557,187,655
Events in quadrant D36,740,9576,798,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01878490
B01911520
C01900420
D02628250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018200
B018200
C018200
D018200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A894219961.113832%
B8942112281.373279%
C8942116341.827311%
D8942177658.683643%

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 105616 89425 0 0 0.00% 0.00%
B 105616 89423 4 4 0.00% 0.00%
C 105616 89424 14 14 0.01% 0.02%
D 105616 89424 681 681 0.64% 0.76%

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 135007 120.66 5028 4945 1077.9
A 11 47 131848 117.73 5028 4945 1077.9
A 0 226 32371 25.44 5028 4945 1077.9
B 0 190 245038 257.16 5051 4942 933.6
B 0 197 167808 174.44 5051 4942 933.6
B 0 230 142503 147.34 5051 4942 933.6
C 10 22 200565 173.37 4861 4852 1128.8
C 0 10 200290 173.13 4861 4852 1128.8
C 0 207 73284 60.62 4861 4852 1128.8
D 1 52 8108279 7378.36 4777 4626 1098.3
D 1 239 4800152 4366.32 4777 4626 1098.3
D 12 227 2791949 2537.85 4777 4626 1098.3

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