ASTROSAT CZTI

Data Quality Report

Orbit 20200504_A07_027T16_9000003642_level2

Creation date: 2020-05-10T12:35:10.873732
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_027T16_9000003642cztM0_level2_bc.evt modeM0/AS1A07_027T16_9000003642cztM0_level2_quad_clean.evt
Size (bytes)2,677,538,880876,078,720
Size2.5 GB 835.5 MB
Events in quadrant A13,840,3925,729,546
Events in quadrant B13,067,9545,827,273
Events in quadrant C23,383,6795,507,837
Events in quadrant D26,790,6385,433,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01263830
B01238110
C01583080
D01688560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011980
B011980
C011980
D011980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588647181.219761%
B588646581.117831%
C5886441817.102813%
D5886433565.701278%

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 69674 58864 36 36 0.05% 0.06%
B 69674 58865 2 2 0.00% 0.00%
C 69674 58864 1679 1679 2.41% 2.85%
D 69674 58864 1168 1168 1.68% 1.98%

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 6 16 1195178 1699.48 3258 3203 701.4
A 13 254 87978 120.87 3258 3203 701.4
A 11 208 48086 63.99 3258 3203 701.4
B 0 190 184652 295.4 3280 3206 614.2
B 4 216 64711 100.13 3280 3206 614.2
B 3 209 50667 77.27 3280 3206 614.2
C 7 247 10029334 13759.19 3100 3092 728.7
C 2 16 1370552 1876.59 3100 3092 728.7
C 0 10 38338 48.37 3100 3092 728.7
D 1 52 8421887 11382.92 3201 3097 739.6
D 8 195 5526344 7467.9 3201 3097 739.6
D 7 238 319488 427.79 3201 3097 739.6

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