ASTROSAT CZTI

Data Quality Report

Orbit 40222

Creation date: 2024-06-27T22:13:47.057669
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_9000005532_40222cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40222cztM0_level2_quad_clean.evt
Size (bytes)679,164,480152,461,440
Size647.7 MB 145.4 MB
Events in quadrant A5,233,6981,032,313
Events in quadrant B4,907,0221,071,449
Events in quadrant C4,730,9761,027,601
Events in quadrant D9,521,403816,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212151
B0211561
C0200091
D0349091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9637900.933901%
B9637410.425444%
C9637380.394314%
D9637152515.824427%

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 10980 9638 54 54 0.49% 0.56%
B 10980 9638 21 21 0.19% 0.22%
C 10980 9638 22 22 0.20% 0.23%
D 10980 9638 1261 1261 11.48% 13.08%

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 660537 3093.41 1046 1022 213.2
A 13 248 271747 1269.82 1046 1022 213.2
A 6 10 195890 914.02 1046 1022 213.2
B 7 202 306192 1505.28 1046 1018 202.7
B 5 255 179510 880.42 1046 1018 202.7
B 0 229 103390 504.95 1046 1018 202.7
C 15 214 403797 1685.92 1031 1039 238.9
C 14 254 108789 451.04 1031 1039 238.9
C 4 254 63824 262.81 1031 1039 238.9
D 12 227 4340875 18548.47 953 924 234.0
D 12 233 701741 2995.21 953 924 234.0
D 13 249 502042 2141.72 953 924 234.0

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