ASTROSAT CZTI

Data Quality Report

Orbit 38504

Creation date: 2024-06-27T21:53:38.657918
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_018T01_9000005386_38504cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38504cztM0_level2_quad_clean.evt
Size (bytes)348,606,72094,501,440
Size332.5 MB 90.1 MB
Events in quadrant A2,950,809669,013
Events in quadrant B3,078,127683,665
Events in quadrant C2,508,954623,122
Events in quadrant D3,971,376530,311

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118243
B0122402
C0104022
D0151802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5073310.611078%
B5073430.847625%
C507340.078849%
D50734919.678691%

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 7076 5074 14 14 0.20% 0.28%
B 7076 5074 22 22 0.31% 0.43%
C 7076 5074 1 1 0.01% 0.02%
D 7076 5074 472 472 6.67% 9.30%

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 373992 3041.36 612 602 122.8
A 9 143 73656 595.04 612 602 122.8
A 12 189 71174 574.83 612 602 122.8
B 8 3 584918 5193.63 601 588 112.5
B 0 213 31476 274.54 601 588 112.5
B 4 170 26024 226.08 601 588 112.5
C 15 214 216447 1620.84 578 581 133.2
C 0 10 14882 107.38 578 581 133.2
C 4 221 8505 59.49 578 581 133.2
D 10 118 1070439 7921.39 559 543 135.1
D 2 153 185232 1367.42 559 543 135.1
D 2 250 182823 1349.58 559 543 135.1

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