ASTROSAT CZTI

Data Quality Report

Orbit 34870

Creation date: 2022-03-11T04:36:29.997154
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/AS1C07_005T01_9000004992_34870cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34870cztM0_level2_quad_clean.evt
Size (bytes)488,989,44080,979,840
Size466.3 MB 77.2 MB
Events in quadrant A3,337,113528,912
Events in quadrant B4,044,845537,612
Events in quadrant C2,893,845539,630
Events in quadrant D4,196,631497,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130013
B0152002
C0114012
D0157672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49692875.775810%
B496953410.746629%
C4969671.348360%
D49693446.922922%

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 7002 4969 244 244 3.48% 4.91%
B 7002 4970 407 407 5.81% 8.19%
C 7002 4970 60 60 0.86% 1.21%
D 7002 4970 351 351 5.01% 7.06%

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 15 169 931379 7919.85 590 580 117.5
A 15 237 51305 431.6 590 580 117.5
A 10 83 51157 430.34 590 580 117.5
B 5 172 579101 5235.73 595 580 110.5
B 0 190 524435 4740.99 595 580 110.5
B 5 31 243197 2195.73 595 580 110.5
C 15 214 211846 1573.22 590 594 134.3
C 0 10 195674 1452.79 590 594 134.3
C 0 207 87959 650.62 590 594 134.3
D 8 195 1152855 7999.48 575 561 144.0
D 1 52 248644 1722.25 575 561 144.0
D 12 6 132723 917.5 575 561 144.0

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