ASTROSAT CZTI

Data Quality Report

Orbit 20200216_A07_027T06_9000003508_level2

Creation date: 2020-02-18T10:46:16.876243
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_027T06_9000003508cztM0_level2_bc.evt modeM0/AS1A07_027T06_9000003508cztM0_level2_quad_clean.evt
Size (bytes)1,497,260,160480,536,640
Size1.4 GB 458.3 MB
Events in quadrant A8,376,7163,026,423
Events in quadrant B11,245,1983,060,373
Events in quadrant C8,840,5412,974,511
Events in quadrant D14,228,2592,821,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07900
B07900
C07900
D07900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0807120
B0918650
C0830960
D01012440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389212480.637188%
B389219292.386886%
C389215861.505614%
D3892111733.013797%

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 46951 38921 0 0 0.00% 0.00%
B 46951 38916 65 65 0.14% 0.17%
C 46951 38920 8 8 0.02% 0.02%
D 46951 38917 249 249 0.53% 0.64%

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 67363 140.5 2166 2127 464.3
A 0 226 14134 25.86 2166 2127 464.3
A 12 194 13511 24.52 2166 2127 464.3
B 0 229 1031066 2534.99 2191 2139 405.9
B 3 64 680654 1671.67 2191 2139 405.9
B 0 189 430837 1056.19 2191 2139 405.9
C 10 9 483280 977.68 2108 2104 492.2
C 7 247 204071 410.37 2108 2104 492.2
C 0 207 22021 40.47 2108 2104 492.2
D 1 52 3775479 7771.87 2100 2027 485.5
D 7 238 833517 1712.55 2100 2027 485.5
D 13 174 745150 1530.55 2100 2027 485.5

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