ASTROSAT CZTI

Data Quality Report

Orbit 50946

Creation date: 2025-03-19T16:52:52.995736
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_9000006450_50946cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50946cztM0_level2_quad_clean.evt
Size (bytes)896,604,48081,264,960
Size855.1 MB 77.5 MB
Events in quadrant A16,039,712140,103
Events in quadrant B4,687,603673,678
Events in quadrant C5,091,729611,691
Events in quadrant D6,830,448549,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0525501
B0188651
C0198301
D0251851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6970574282.381636%
B69705788.292683%
C69703695.294118%
D696989112.785192%

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 7550 6971 5153 5153 68.25% 73.92%
B 7550 6971 304 304 4.03% 4.36%
C 7550 6971 212 212 2.81% 3.04%
D 7549 6969 820 820 10.86% 11.77%

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 8 43 13321938 127047.63 406 394 104.9
A 9 13 486717 4638.06 406 394 104.9
A 12 3 274725 2616.3 406 394 104.9
B 4 206 1052571 6904.6 718 693 152.3
B 8 128 281674 1844.38 718 693 152.3
B 4 171 182365 1192.51 718 693 152.3
C 14 245 579632 2985.48 712 706 193.9
C 3 233 290009 1491.92 712 706 193.9
C 13 3 242545 1247.15 712 706 193.9
D 8 176 2560160 13242.79 691 662 193.3
D 7 222 352241 1819.06 691 662 193.3
D 15 108 297205 1534.3 691 662 193.3

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