ASTROSAT CZTI

Data Quality Report

Orbit 20160317_T01_057T01_9000000380_level2

Creation date: 2019-11-11T21:01:35.077107
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/AS1T01_057T01_9000000380cztM0_level2_bc.evt modeM0/AS1T01_057T01_9000000380cztM0_level2_quad_clean.evt
Size (bytes)4,543,384,3201,646,651,520
Size4.2 GB 1.5 GB
Events in quadrant A27,319,15310,197,015
Events in quadrant B30,725,54610,304,707
Events in quadrant C33,450,88010,069,096
Events in quadrant D36,573,9489,725,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900050
B03009670
C03102790
D03256110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028520
B028520
C028520
D028520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13980418261.306114%
B13980325601.831148%
C13980326181.872635%
D13976734112.440490%

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 165651 139813 5 5 0.00% 0.00%
B 165651 139809 376 376 0.23% 0.27%
C 165651 139810 370 370 0.22% 0.26%
D 165651 139774 155 155 0.09% 0.11%

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 14 238 943071 646.41 6611 6440 1449.0
A 8 15 231430 155.27 6611 6440 1449.0
A 13 246 161372 106.92 6611 6440 1449.0
B 15 85 1531528 1274.17 6687 6466 1196.9
B 5 6 1007379 836.25 6687 6466 1196.9
B 0 207 639393 528.8 6687 6466 1196.9
C 9 144 4912293 3511.9 6449 6317 1397.0
C 9 70 1196194 851.76 6449 6317 1397.0
C 0 207 827512 587.85 6449 6317 1397.0
D 2 184 3600115 2420.25 6415 6178 1484.9
D 5 233 3296960 2216.1 6415 6178 1484.9
D 2 136 1588014 1065.25 6415 6178 1484.9

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