ASTROSAT CZTI

Data Quality Report

Orbit 20200106_A08_008T01_9000003414_level2

Creation date: 2020-01-08T16:03:39.995047
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/AS1A08_008T01_9000003414cztM0_level2_bc.evt modeM0/AS1A08_008T01_9000003414cztM0_level2_quad_clean.evt
Size (bytes)3,805,574,4001,472,898,240
Size3.5 GB 1.4 GB
Events in quadrant A47,159,1329,519,664
Events in quadrant B17,508,99010,460,910
Events in quadrant C20,391,0849,778,034
Events in quadrant D24,890,9809,511,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02539220
B01658800
C01762990
D01922400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015920
B015920
C015920
D015920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A779061106514.203014%
B7790614411.849665%
C7790625603.286011%
D7790630913.967602%

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 91086 77899 6586 6586 7.23% 8.45%
B 91086 77900 21 21 0.02% 0.03%
C 91085 77901 531 531 0.58% 0.68%
D 91086 77902 407 407 0.45% 0.52%

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 32153458 37810.71 3877 3810 850.3
A 13 254 113386 128.87 3877 3810 850.3
A 4 2 42099 45.03 3877 3810 850.3
B 0 190 462876 586.39 4177 4082 782.4
B 0 189 403836 510.93 4177 4082 782.4
B 0 228 152177 189.28 4177 4082 782.4
C 8 208 2858673 3070.06 3918 3900 929.9
C 9 15 705929 754.97 3918 3900 929.9
C 0 207 697927 746.37 3918 3900 929.9
D 12 233 3001406 3216.64 3975 3844 931.9
D 1 52 2810444 3011.72 3975 3844 931.9
D 7 38 1012499 1082.37 3975 3844 931.9

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