ASTROSAT CZTI

Data Quality Report

Orbit 51248

Creation date: 2025-03-20T10:11:59.820634
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_001T01_9000006454_51248cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51248cztM0_level2_quad_clean.evt
Size (bytes)595,560,96091,972,800
Size568.0 MB 87.7 MB
Events in quadrant A5,175,905611,334
Events in quadrant B3,611,086679,598
Events in quadrant C7,828,421502,326
Events in quadrant D4,939,362549,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198112
B0151952
C0276352
D0192032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63381852.918902%
B63381292.035342%
C6338144922.862102%
D63383846.058694%

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 7503 6340 127 127 1.69% 2.00%
B 7503 6340 55 55 0.73% 0.87%
C 7503 6340 1250 1250 16.66% 19.72%
D 7503 6340 311 311 4.15% 4.91%

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 12 3 1506086 8933.97 671 654 168.5
A 12 194 174404 1031.12 671 654 168.5
A 14 254 122462 722.87 671 654 168.5
B 10 254 217743 1517.3 676 653 143.1
B 8 128 193386 1347.06 676 653 143.1
B 7 252 163783 1140.16 676 653 143.1
C 4 12 4514879 26964.11 608 604 167.4
C 13 3 204383 1217.19 608 604 167.4
C 4 13 159108 946.76 608 604 167.4
D 8 176 503575 2774.51 638 613 181.3
D 10 172 463105 2551.26 638 613 181.3
D 3 12 374547 2062.75 638 613 181.3

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