ASTROSAT CZTI

Data Quality Report

Orbit 30831

Creation date: 2024-06-27T20:20:07.283657
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/AS1A10_071T38_9000004454_30831cztM0_level2.evt modeM0/AS1A10_071T38_9000004454_30831cztM0_level2_quad_clean.evt
Size (bytes)623,476,80080,542,080
Size594.6 MB 76.8 MB
Events in quadrant A3,373,762528,359
Events in quadrant B5,641,009532,684
Events in quadrant C3,930,182487,247
Events in quadrant D5,513,432452,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136232
B0207202
C0156572
D0209232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6270260.414673%
B62701973.141946%
C62705028.006380%
D62702904.625199%

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 7580 6270 0 0 0.00% 0.00%
B 7580 6270 97 97 1.28% 1.55%
C 7580 6271 53 53 0.70% 0.85%
D 7580 6270 235 235 3.10% 3.75%

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 13 254 11592 62.02 873 861 173.0
A 15 192 8063 41.63 873 861 173.0
A 3 137 8049 41.55 873 861 173.0
B 6 159 1778168 11029.18 865 846 161.1
B 5 255 347547 2151.45 865 846 161.1
B 4 171 79576 488.56 865 846 161.1
C 3 233 261425 1427.42 788 799 182.6
C 14 238 220966 1205.83 788 799 182.6
C 0 10 210962 1151.04 788 799 182.6
D 8 195 1704590 9060.97 794 779 188.0
D 12 218 543406 2885.72 794 779 188.0
D 1 52 93651 493.9 794 779 188.0

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