ASTROSAT CZTI

Data Quality Report

Orbit 42062

Creation date: 2024-06-27T22:36:22.254115
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/AS1A12_037T03_9000005738_42062cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42062cztM0_level2_quad_clean.evt
Size (bytes)747,659,520165,061,440
Size713.0 MB 157.4 MB
Events in quadrant A9,001,9761,008,679
Events in quadrant B5,001,8461,172,826
Events in quadrant C4,963,3271,116,437
Events in quadrant D7,872,141953,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337043
B0226453
C0217803
D0310753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10781140112.995084%
B10781830.769873%
C1078190.083480%
D107819628.923105%

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 13586 10783 1122 1122 8.26% 10.41%
B 13586 10783 43 43 0.32% 0.40%
C 13586 10783 0 0 0.00% 0.00%
D 13586 10783 611 611 4.50% 5.67%

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 15 223 2779561 12054.25 1118 1095 230.5
A 10 83 1079570 4678.92 1118 1095 230.5
A 15 222 547225 2369.36 1118 1095 230.5
B 5 255 170132 751.11 1165 1134 225.0
B 15 85 107517 472.82 1165 1134 225.0
B 0 229 75822 331.95 1165 1134 225.0
C 15 214 445349 1662.62 1142 1148 267.2
C 12 249 34358 124.3 1142 1148 267.2
C 7 220 12810 43.65 1142 1148 267.2
D 1 52 1137851 4229.8 1096 1067 268.8
D 12 6 802859 2983.35 1096 1067 268.8
D 13 249 677349 2516.34 1096 1067 268.8

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