ASTROSAT CZTI

Data Quality Report

Orbit 20210619_A10_058T11_9000004474_level2

Creation date: 2021-06-21T10:49:34.186141
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_058T11_9000004474cztM0_level2_bc.evt modeM0/AS1A10_058T11_9000004474cztM0_level2_quad_clean.evt
Size (bytes)3,689,884,8001,055,712,960
Size3.4 GB 1006.8 MB
Events in quadrant A16,584,3226,834,207
Events in quadrant B38,860,3516,792,626
Events in quadrant C21,505,7896,591,963
Events in quadrant D29,580,2956,492,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610730
B02378730
C01827640
D02090240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7680310821.408799%
B7680324123.140502%
C7680226953.509023%
D7680222812.969975%

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 104817 76797 0 0 0.00% 0.00%
B 104817 76797 17 17 0.02% 0.02%
C 104817 76794 21 21 0.02% 0.03%
D 104817 76799 64 64 0.06% 0.08%

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 122619 130.82 4270 4201 905.2
A 11 47 102399 108.48 4270 4201 905.2
A 0 226 26480 24.61 4270 4201 905.2
B 6 159 20863257 26000.07 4274 4172 802.3
B 4 80 628136 777.75 4274 4172 802.3
B 0 190 319234 392.71 4274 4172 802.3
C 3 233 3258997 3371.94 4113 4102 965.3
C 0 10 2151108 2224.21 4113 4102 965.3
C 2 114 142977 143.87 4113 4102 965.3
D 13 174 7543416 7957.63 4192 4067 947.4
D 8 195 3549990 3742.65 4192 4067 947.4
D 2 250 1960979 2065.48 4192 4067 947.4

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