ASTROSAT CZTI

Data Quality Report

Orbit 00191

Creation date: 2024-06-27T13:57:34.221096
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/AS1P01_120T01_9000000016_00191cztM0_level2.evt modeM0/AS1P01_120T01_9000000016_00191cztM0_level2_quad_clean.evt
Size (bytes)818,285,76076,291,200
Size780.4 MB 72.8 MB
Events in quadrant A6,273,459479,728
Events in quadrant B6,418,761491,875
Events in quadrant C5,813,560488,346
Events in quadrant D5,911,897467,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220110
B0220110
C0220110
D0220110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04504522524
B04594022971
C04231421162
D04291121457

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03417
B03417
C03417
D03417

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547130.054835%
B5471280.511789%
C547010.018282%
D5471160.292451%

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 7093 5473 99 99 1.40% 1.81%
B 7093 5473 112 112 1.58% 2.05%
C 7093 5473 56 56 0.79% 1.02%
D 7093 5473 76 76 1.07% 1.39%

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 5 244 47842 133.59 1593 1583 346.3
A 13 17 25610 69.38 1593 1583 346.3
A 0 253 14270 36.64 1593 1583 346.3
B 0 247 130590 345.83 1609 1616 372.9
B 0 190 27825 70.28 1609 1616 372.9
B 8 34 24715 61.94 1609 1616 372.9
C 1 192 11697 24.75 1469 1525 411.0
C 9 128 9909 20.4 1469 1525 411.0
C 10 33 8451 16.85 1469 1525 411.0
D 6 212 72445 163.99 1430 1481 432.7
D 1 4 49475 110.91 1430 1481 432.7
D 10 182 48195 107.95 1430 1481 432.7

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