ASTROSAT CZTI

Data Quality Report

Orbit 20200922_C05_019T03_9000003898_level2

Creation date: 2021-01-08T05:45:35.183847
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/AS1C05_019T03_9000003898cztM0_level2_bc.evt modeM0/AS1C05_019T03_9000003898cztM0_level2_quad_clean.evt
Size (bytes)5,492,462,4001,555,315,200
Size5.1 GB 1.4 GB
Events in quadrant A50,035,4198,482,193
Events in quadrant B58,684,57810,816,980
Events in quadrant C18,277,20811,172,412
Events in quadrant D33,440,69010,682,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04082140
B03054450
C01816270
D02339870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017700
B017700
C017700
D017700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A865733631241.943793%
B865731622818.744874%
C8657314491.673732%
D8657343054.972682%

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 99083 86557 395 395 0.40% 0.46%
B 99083 86560 5228 5228 5.28% 6.04%
C 99083 86569 33 33 0.03% 0.04%
D 99083 86565 462 462 0.47% 0.53%

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 32004845 42333.69 3469 3407 755.9
A 6 16 3830323 5062.51 3469 3407 755.9
A 0 13 519443 682.65 3469 3407 755.9
B 0 189 39987522 47248.95 4395 4294 846.2
B 5 172 1089573 1282.5 4395 4294 846.2
B 0 219 199535 230.72 4395 4294 846.2
C 2 16 521807 490.78 4452 4453 1054.1
C 15 208 375154 351.66 4452 4453 1054.1
C 0 207 126222 115.51 4452 4453 1054.1
D 1 52 8072750 7754.53 4456 4316 1040.5
D 2 250 4640670 4455.97 4456 4316 1040.5
D 11 176 1298329 1243.67 4456 4316 1040.5

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