ASTROSAT CZTI

Data Quality Report

Orbit 24089

Creation date: 2024-06-27T19:02:01.694267
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/AS1T03_182T01_9000003560_24089cztM0_level2.evt modeM0/AS1T03_182T01_9000003560_24089cztM0_level2_quad_clean.evt
Size (bytes)586,558,08077,768,640
Size559.4 MB 74.2 MB
Events in quadrant A3,609,404474,712
Events in quadrant B3,949,057477,196
Events in quadrant C3,652,957457,249
Events in quadrant D6,065,918445,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149841
B0159771
C0149941
D0229635

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71781401.950404%
B71791682.340159%
C71791702.368018%
D71784956.896071%

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 7738 7178 0 0 0.00% 0.00%
B 7739 7179 7 7 0.09% 0.10%
C 7739 7179 2 2 0.03% 0.03%
D 7737 7177 328 328 4.24% 4.57%

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 2 250 32897 170.48 925 904 187.7
A 13 254 11574 56.86 925 904 187.7
A 3 1 9420 45.38 925 904 187.7
B 0 197 129461 732.26 911 888 175.6
B 0 189 84776 477.77 911 888 175.6
B 0 229 81489 459.05 911 888 175.6
C 14 238 137831 656.66 881 888 208.5
C 7 247 60640 286.52 881 888 208.5
C 0 239 20908 96.0 881 888 208.5
D 1 52 900545 4169.61 884 858 215.8
D 12 218 578430 2676.76 884 858 215.8
D 8 195 574699 2659.47 884 858 215.8

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