ASTROSAT CZTI

Data Quality Report

Orbit 20210120_A10_123T08_9000004126_level2

Creation date: 2021-01-22T12:37:20.588329
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_123T08_9000004126cztM0_level2_bc.evt modeM0/AS1A10_123T08_9000004126cztM0_level2_quad_clean.evt
Size (bytes)4,156,208,6401,064,856,960
Size3.9 GB 1015.5 MB
Events in quadrant A16,996,1806,968,500
Events in quadrant B19,017,8577,043,588
Events in quadrant C44,217,3896,562,390
Events in quadrant D40,506,0696,494,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01586400
B01668750
C02492310
D02383550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015420
B015420
C015420
D015420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7558810501.389109%
B7558816072.125999%
C75588786510.405091%
D7558847216.245700%

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 87453 75577 129 129 0.15% 0.17%
B 87453 75575 40 40 0.05% 0.05%
C 87453 75576 697 697 0.80% 0.92%
D 87453 75581 1014 1014 1.16% 1.34%

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 14 239 296648 332.33 4113 4048 880.5
A 15 174 265699 297.18 4113 4048 880.5
A 6 16 220427 245.76 4113 4048 880.5
B 5 255 1541201 2002.01 4107 4021 767.8
B 4 80 691760 895.7 4107 4021 767.8
B 10 245 585110 756.8 4107 4021 767.8
C 3 233 29288332 32624.41 3812 3802 897.6
C 14 254 126463 136.65 3812 3802 897.6
C 4 254 61323 64.08 3812 3802 897.6
D 8 195 13697646 15034.99 3934 3814 910.8
D 1 52 9683058 10627.22 3934 3814 910.8
D 12 233 1222990 1338.58 3934 3814 910.8

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