ASTROSAT CZTI

Data Quality Report

Orbit 50997

Creation date: 2025-03-03T09:41:24.379056
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_001T02_9000006452_50997cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50997cztM0_level2_quad_clean.evt
Size (bytes)381,620,16064,235,520
Size363.9 MB 61.3 MB
Events in quadrant A3,174,013419,514
Events in quadrant B3,375,805439,378
Events in quadrant C3,984,496389,788
Events in quadrant D3,238,951377,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125341
B0133551
C0150841
D0128671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45401473.237885%
B45403116.850220%
C45403487.665198%
D45401553.414097%

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 5455 4541 91 91 1.67% 2.00%
B 5455 4541 132 132 2.42% 2.91%
C 5455 4541 298 298 5.46% 6.56%
D 5455 4541 137 137 2.51% 3.02%

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 4 249 258667 2178.99 476 464 118.5
A 4 4 153995 1295.66 476 464 118.5
A 3 130 145205 1221.48 476 464 118.5
B 12 32 550347 5499.83 468 452 100.0
B 4 81 367126 3667.33 468 452 100.0
B 1 223 170851 1704.26 468 452 100.0
C 12 247 855840 6730.9 454 448 127.1
C 1 44 501652 3943.87 454 448 127.1
C 15 147 223144 1752.35 454 448 127.1
D 8 176 280683 2198.14 457 440 127.5
D 2 216 243805 1908.88 457 440 127.5
D 2 153 187135 1464.38 457 440 127.5

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