ASTROSAT CZTI

Data Quality Report

Orbit 44175

Creation date: 2024-06-27T23:00:06.512805
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/AS1A13_079T01_9000005956_44175cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44175cztM0_level2_quad_clean.evt
Size (bytes)137,185,92031,812,480
Size130.8 MB 30.3 MB
Events in quadrant A1,260,269217,479
Events in quadrant B1,438,594202,576
Events in quadrant C1,023,132208,177
Events in quadrant D1,199,381190,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066
B055
C022
D099

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066911664
B071401476
C060031532
D072842378

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05818
B05515
C05414
D05313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1976110.556680%
B199022111.105528%
C198250.252270%
D1981341.716305%

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 2102 1997 0 0 0.00% 0.00%
B 2109 2013 144 144 6.83% 7.15%
C 2103 2006 3 3 0.14% 0.15%
D 2086 2003 31 31 1.49% 1.55%

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 327544 6400.6 235 229 51.1
A 15 223 19367 374.24 235 229 51.1
A 7 3 3780 69.44 235 229 51.1
B 5 172 519142 11303.61 218 211 45.9
B 0 189 13399 287.27 218 211 45.9
B 4 158 10983 234.64 218 211 45.9
C 14 254 80075 1382.57 236 237 57.7
C 8 13 8360 140.67 236 237 57.7
C 3 233 4370 71.57 236 237 57.7
D 2 249 68888 1141.21 232 224 60.2
D 13 187 63940 1058.98 232 224 60.2
D 13 171 54811 907.25 232 224 60.2

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