ASTROSAT CZTI

Data Quality Report

Orbit 00630

Creation date: 2024-06-27T14:00:49.671870
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_116T01_9000000086_00630cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00630cztM0_level2_quad_clean.evt
Size (bytes)2,186,674,560177,960,960
Size2.0 GB 169.7 MB
Events in quadrant A15,582,2681,146,138
Events in quadrant B15,686,3411,153,817
Events in quadrant C14,142,4321,149,997
Events in quadrant D19,933,7611,020,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557773
B0560543
C0515513
D0689024

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13298110.082719%
B13298250.187998%
C13299430.323333%
D13298154311.603249%

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 19675 13301 273 273 1.39% 2.05%
B 19675 13301 235 235 1.19% 1.77%
C 19676 13302 167 167 0.85% 1.26%
D 19675 13301 2718 2718 13.81% 20.43%

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 0 238 101814 110.72 3946 3895 884.4
A 0 69 91030 98.53 3946 3895 884.4
A 13 160 36721 37.12 3946 3895 884.4
B 0 220 96781 98.4 3978 4002 942.8
B 5 249 84522 85.4 3978 4002 942.8
B 7 221 80545 81.18 3978 4002 942.8
C 9 52 316608 319.62 3500 3615 979.3
C 15 241 32543 29.54 3500 3615 979.3
C 9 54 24863 21.7 3500 3615 979.3
D 13 25 3429715 3411.27 3171 3297 1004.4
D 1 4 1247924 1239.12 3171 3297 1004.4
D 12 237 1165469 1157.03 3171 3297 1004.4

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