ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_006T05_9000004506_level2

Creation date: 2021-07-05T13:08:34.424066
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C06_006T05_9000004506cztM0_level2_bc.evt modeM0/AS1C06_006T05_9000004506cztM0_level2_quad_clean.evt
Size (bytes)409,602,240132,212,160
Size390.6 MB 126.1 MB
Events in quadrant A1,822,568908,389
Events in quadrant B3,989,689887,828
Events in quadrant C1,909,476851,216
Events in quadrant D4,166,636835,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166830
B0235710
C0170710
D0246450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75001491.986667%
B75002683.573333%
C75002473.293333%
D75002873.826667%

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 9795 7500 0 0 0.00% 0.00%
B 9795 7501 0 0 0.00% 0.00%
C 9795 7500 1 1 0.01% 0.01%
D 9795 7501 29 29 0.30% 0.39%

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 13 254 13536 127.73 471 464 102.3
A 11 47 3484 29.51 471 464 102.3
A 0 226 3175 26.49 471 464 102.3
B 6 159 2013271 22973.79 462 453 87.6
B 0 190 77791 882.72 462 453 87.6
B 12 18 25747 288.7 462 453 87.6
C 0 10 169114 1634.02 439 439 103.2
C 4 175 17848 168.65 439 439 103.2
C 2 114 14442 135.65 439 439 103.2
D 8 195 1996927 17118.08 452 441 116.6
D 12 233 139945 1196.12 452 441 116.6
D 13 249 95459 814.69 452 441 116.6

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