ASTROSAT CZTI

Data Quality Report

Orbit 20210428_A10_071T09_9000004344_level2

Creation date: 2021-04-30T11:25:02.456028
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_071T09_9000004344cztM0_level2_bc.evt modeM0/AS1A10_071T09_9000004344cztM0_level2_quad_clean.evt
Size (bytes)3,272,325,120688,392,000
Size3.0 GB 656.5 MB
Events in quadrant A12,290,1534,416,733
Events in quadrant B26,210,6134,457,989
Events in quadrant C37,842,4214,069,851
Events in quadrant D19,036,8984,140,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011140
B011140
C011140
D011140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01162770
B01662060
C02037340
D01353510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5487410961.997303%
B5487415722.864745%
C54874558410.176040%
D5487414022.554944%

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 62669 54878 31 31 0.05% 0.06%
B 62669 54872 0 0 0.00% 0.00%
C 62669 54871 482 482 0.77% 0.88%
D 62669 54874 112 112 0.18% 0.20%

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 0 13 506895 788.82 3008 2959 638.8
A 8 192 93841 142.26 3008 2959 638.8
A 13 254 90044 136.32 3008 2959 638.8
B 6 159 14544591 25267.45 3045 2976 575.5
B 0 230 24631 37.63 3045 2976 575.5
B 0 190 21326 31.88 3045 2976 575.5
C 3 233 26691261 40496.83 2824 2819 659.0
C 15 208 150892 224.68 2824 2819 659.0
C 2 114 102454 151.19 2824 2819 659.0
D 7 223 2550071 3742.71 2908 2828 680.6
D 8 195 2108790 3094.32 2908 2828 680.6
D 13 104 1708986 2506.89 2908 2828 680.6

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