ASTROSAT CZTI

Data Quality Report

Orbit 40968

Creation date: 2024-06-27T22:22:48.966848
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_052T04_9000005582_40968cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40968cztM0_level2_quad_clean.evt
Size (bytes)301,458,24089,179,200
Size287.5 MB 85.0 MB
Events in quadrant A2,875,780618,571
Events in quadrant B2,269,710626,685
Events in quadrant C2,910,538568,951
Events in quadrant D2,717,577539,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114763
B099782
C0116052
D0114552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4941380.769075%
B494180.161911%
C49411422.873912%
D49411002.023882%

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 7064 4942 35 35 0.50% 0.71%
B 7064 4942 0 0 0.00% 0.00%
C 7064 4942 120 120 1.70% 2.43%
D 7064 4942 85 85 1.20% 1.72%

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 483927 4165.73 574 563 116.0
A 12 189 158505 1361.18 574 563 116.0
A 13 254 7660 61.16 574 563 116.0
B 0 186 13813 122.39 571 556 108.3
B 12 111 13396 118.54 571 556 108.3
B 11 111 12391 109.26 571 556 108.3
C 14 254 351569 2761.09 547 551 127.1
C 15 214 214917 1686.19 547 551 127.1
C 0 10 206235 1617.9 547 551 127.1
D 13 249 321677 2408.28 548 533 133.3
D 2 249 202669 1515.83 548 533 133.3
D 2 234 24260 177.93 548 533 133.3

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