ASTROSAT CZTI

Data Quality Report

Orbit 42490

Creation date: 2024-06-27T22:40:47.357953
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_001T10_9000005806_42490cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42490cztM0_level2_quad_clean.evt
Size (bytes)291,493,44084,193,920
Size278.0 MB 80.3 MB
Events in quadrant A2,910,508579,352
Events in quadrant B2,583,514570,645
Events in quadrant C2,304,620548,703
Events in quadrant D2,608,118506,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115623
B0111052
C099792
D0112172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4913220.447792%
B4913871.770812%
C491330.061062%
D49131563.175249%

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 7066 4914 21 21 0.30% 0.43%
B 7066 4914 66 66 0.93% 1.34%
C 7066 4914 0 0 0.00% 0.00%
D 7066 4914 99 99 1.40% 2.01%

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 567597 5165.14 540 530 109.8
A 15 223 175914 1597.49 540 530 109.8
A 12 189 54985 496.0 540 530 109.8
B 5 255 386700 3870.72 525 511 99.8
B 15 35 36682 362.54 525 511 99.8
B 5 207 31202 307.61 525 511 99.8
C 15 214 207543 1738.82 519 521 119.1
C 14 254 39539 327.72 519 521 119.1
C 0 239 15891 129.1 519 521 119.1
D 10 118 317329 2472.68 524 508 128.1
D 10 199 75761 587.33 524 508 128.1
D 5 171 44027 339.65 524 508 128.1

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