ASTROSAT CZTI

Data Quality Report

Orbit 40809

Creation date: 2024-06-27T22:20:47.617484
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_099T03_9000005570_40809cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40809cztM0_level2_quad_clean.evt
Size (bytes)291,559,68088,004,160
Size278.1 MB 83.9 MB
Events in quadrant A2,831,042598,793
Events in quadrant B2,455,060622,647
Events in quadrant C2,589,240574,397
Events in quadrant D2,531,665522,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112863
B0103882
C0105522
D0110832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4941330.667881%
B4941270.546448%
C4941410.829792%
D4941821.659583%

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 7065 4942 22 22 0.31% 0.45%
B 7065 4942 10 10 0.14% 0.20%
C 7065 4942 43 43 0.61% 0.87%
D 7065 4942 58 58 0.82% 1.17%

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 10 83 474401 4047.53 572 562 117.1
A 13 248 90602 769.12 572 562 117.1
A 2 79 48214 407.04 572 562 117.1
B 5 255 116612 1069.69 573 561 108.5
B 4 171 60262 550.29 573 561 108.5
B 0 190 15209 135.02 573 561 108.5
C 15 214 213083 1646.06 557 559 129.1
C 0 10 143715 1108.79 557 559 129.1
C 14 254 56105 430.22 557 559 129.1
D 2 249 149101 1102.41 550 535 134.8
D 2 153 121516 897.72 550 535 134.8
D 13 249 65793 484.24 550 535 134.8

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