ASTROSAT CZTI

Data Quality Report

Orbit 20210305_A10_101T19_9000004228_level2

Creation date: 2021-03-08T19:20:25.443734
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_101T19_9000004228cztM0_level2_bc.evt modeM0/AS1A10_101T19_9000004228cztM0_level2_quad_clean.evt
Size (bytes)6,440,613,1201,060,755,840
Size6.0 GB 1011.6 MB
Events in quadrant A25,189,0516,824,905
Events in quadrant B21,169,7826,966,529
Events in quadrant C28,492,2246,702,775
Events in quadrant D114,385,8035,748,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017480
B017480
C017480
D017480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02007790
B01903400
C02202340
D04994770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8576224372.841585%
B8576219922.322707%
C8576239544.610434%
D857623739343.600896%

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 98173 85766 320 320 0.33% 0.37%
B 98173 85762 66 66 0.07% 0.08%
C 98173 85761 3 3 0.00% 0.00%
D 98173 85761 16368 16368 16.67% 19.09%

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 1 113 6819041 6785.41 4694 4612 1004.3
A 13 254 157521 152.26 4694 4612 1004.3
A 0 13 141839 136.64 4694 4612 1004.3
B 5 255 1284532 1443.7 4722 4610 886.6
B 0 229 819734 919.43 4722 4610 886.6
B 10 245 461863 515.76 4722 4610 886.6
C 3 233 10368222 9719.58 4508 4489 1066.3
C 10 9 277023 255.59 4508 4489 1066.3
C 14 254 214261 196.73 4508 4489 1066.3
D 8 195 65810599 73493.02 3924 3804 895.4
D 1 52 16450022 18367.14 3924 3804 895.4
D 12 33 13958061 15584.11 3924 3804 895.4

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