ASTROSAT CZTI

Data Quality Report

Orbit 13499

Creation date: 2024-06-27T16:41:43.018281
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/AS1A04_103T01_9000001988_13499cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13499cztM0_level2_quad_clean.evt
Size (bytes)466,136,64086,325,120
Size444.5 MB 82.3 MB
Events in quadrant A3,016,774548,294
Events in quadrant B3,894,277547,953
Events in quadrant C3,071,886548,839
Events in quadrant D3,696,624519,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131012
B0157361
C0131381
D0153691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442651.009003%
B64422243.477181%
C6442580.900342%
D6442721.117665%

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 7343 6443 0 0 0.00% 0.00%
B 7343 6443 122 122 1.66% 1.89%
C 7343 6443 0 0 0.00% 0.00%
D 7343 6443 21 21 0.29% 0.33%

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 1 162 23416 144.86 772 758 156.4
A 8 15 12623 75.86 772 758 156.4
A 1 178 7741 44.64 772 758 156.4
B 3 64 738515 5047.69 763 744 146.2
B 10 245 107679 731.63 763 744 146.2
B 4 173 29169 194.48 763 744 146.2
C 3 233 101661 573.62 760 765 175.9
C 0 207 5919 29.3 760 765 175.9
C 13 61 5436 26.56 760 765 175.9
D 8 195 692474 3844.23 749 729 179.9
D 12 110 95147 524.71 749 729 179.9
D 13 122 30766 166.92 749 729 179.9

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