ASTROSAT CZTI

Data Quality Report

Orbit 20201126_A10_049T01_9000004032_level2

Creation date: 2021-01-07T06:44:18.597152
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_049T01_9000004032cztM0_level2_bc.evt modeM0/AS1A10_049T01_9000004032cztM0_level2_quad_clean.evt
Size (bytes)3,983,218,5601,370,741,760
Size3.7 GB 1.3 GB
Events in quadrant A20,851,6319,163,648
Events in quadrant B26,002,3139,123,107
Events in quadrant C22,070,2448,646,053
Events in quadrant D45,550,7708,380,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018400
B018400
C018400
D018400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01929470
B02120310
C02003200
D02777310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9057310731.184680%
B9057321922.420147%
C9057321092.328508%
D9057341664.599605%

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 105993 90564 4 4 0.00% 0.00%
B 105993 90563 39 39 0.04% 0.04%
C 105993 90559 58 58 0.05% 0.06%
D 105993 90562 875 875 0.83% 0.97%

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 15 174 607644 543.34 5216 5143 1108.9
A 13 254 146316 127.31 5216 5143 1108.9
A 8 192 75111 63.1 5216 5143 1108.9
B 10 245 4782859 4966.35 5205 5103 962.0
B 0 230 569719 586.9 5205 5103 962.0
B 15 32 161334 162.4 5205 5103 962.0
C 2 16 1805211 1563.19 4929 4936 1151.7
C 3 233 1181813 1021.89 4929 4936 1151.7
C 6 112 99005 81.68 4929 4936 1151.7
D 1 52 9911890 8638.96 5000 4861 1146.8
D 8 195 9336372 8137.11 5000 4861 1146.8
D 2 250 1957998 1703.14 5000 4861 1146.8

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