ASTROSAT CZTI

Data Quality Report

Orbit 20210118_A10_123T03_9000004120_level2

Creation date: 2021-01-20T09:24:14.767689
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/AS1A10_123T03_9000004120cztM0_level2_bc.evt modeM0/AS1A10_123T03_9000004120cztM0_level2_quad_clean.evt
Size (bytes)2,342,698,560778,420,800
Size2.2 GB 742.4 MB
Events in quadrant A13,785,4354,955,775
Events in quadrant B13,349,9015,019,245
Events in quadrant C14,076,4544,805,143
Events in quadrant D25,629,8604,663,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01289490
B01272940
C01310750
D01698520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012300
B012300
C012300
D012300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A602768921.479859%
B602767751.285752%
C6027614912.473621%
D6027634695.755193%

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 69007 60272 8 8 0.01% 0.01%
B 69007 60265 3 3 0.00% 0.00%
C 69007 60268 3 3 0.00% 0.00%
D 69007 60268 701 701 1.02% 1.16%

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 15 174 744174 1050.4 3320 3269 705.4
A 14 239 124507 171.88 3320 3269 705.4
A 13 254 102053 140.05 3320 3269 705.4
B 4 80 148511 234.1 3326 3252 620.5
B 0 190 122237 191.75 3326 3252 620.5
B 10 245 76482 118.02 3326 3252 620.5
C 3 233 1680809 2259.05 3166 3158 742.6
C 14 254 104737 136.78 3166 3158 742.6
C 10 22 65436 83.86 3166 3158 742.6
D 1 52 5542278 7662.04 3187 3090 722.9
D 8 195 3736017 5163.54 3187 3090 722.9
D 7 80 2089371 2885.83 3187 3090 722.9

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