ASTROSAT CZTI

Data Quality Report

Orbit 20210123_A10_103T01_9000004132_level2

Creation date: 2021-01-28T12:12:19.572386
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_103T01_9000004132cztM0_level2_bc.evt modeM0/AS1A10_103T01_9000004132cztM0_level2_quad_clean.evt
Size (bytes)4,313,897,2801,132,220,160
Size4.0 GB 1.1 GB
Events in quadrant A19,636,1167,344,906
Events in quadrant B19,832,6007,548,677
Events in quadrant C27,370,7947,065,081
Events in quadrant D58,215,1366,693,668

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016740
B016740
C016740
D016740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01776310
B01792730
C02135320
D03135800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8227613331.620157%
B8227616972.062570%
C8227656196.829452%
D822761081213.141135%

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 95381 82266 10 10 0.01% 0.01%
B 95381 82260 36 36 0.04% 0.04%
C 95381 82235 50 50 0.05% 0.06%
D 95381 82261 2643 2643 2.77% 3.21%

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 14 235 1487887 1550.89 4467 4388 956.5
A 15 174 464571 481.09 4467 4388 956.5
A 13 254 147906 150.04 4467 4388 956.5
B 5 172 585846 683.15 4533 4429 851.1
B 10 246 526083 612.93 4533 4429 851.1
B 5 255 492627 573.62 4533 4429 851.1
C 3 233 7002133 6871.87 4290 4273 1018.3
C 4 254 3226608 3164.32 4290 4273 1018.3
C 15 208 298701 289.13 4290 4273 1018.3
D 1 52 21640423 22588.8 4192 4058 957.8
D 8 195 11641690 12149.92 4192 4058 957.8
D 13 104 4119751 4296.87 4192 4058 957.8

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