ASTROSAT CZTI

Data Quality Report

Orbit 21698

Creation date: 2024-06-27T18:31:13.582000
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/AS1A07_039T02_9000003212_21698cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21698cztM0_level2_quad_clean.evt
Size (bytes)524,903,040135,262,080
Size500.6 MB 129.0 MB
Events in quadrant A3,111,174915,670
Events in quadrant B3,408,318953,911
Events in quadrant C5,156,145907,665
Events in quadrant D3,792,848878,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131201
B0139731
C0195871
D0154971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322340.537804%
B6322911.439418%
C63232654.191049%
D63231101.739681%

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 7632 6323 0 0 0.00% 0.00%
B 7632 6323 16 16 0.21% 0.25%
C 7633 6324 11 11 0.14% 0.17%
D 7633 6324 52 52 0.68% 0.82%

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 5 16 39775 246.97 794 779 157.9
A 13 254 11851 70.12 794 779 157.9
A 15 236 8334 47.85 794 779 157.9
B 3 64 109335 735.23 808 790 147.6
B 0 229 61202 409.2 808 790 147.6
B 0 189 33251 219.87 808 790 147.6
C 8 208 1955697 10813.09 787 794 180.8
C 14 238 126241 693.88 787 794 180.8
C 13 61 5493 25.99 787 794 180.8
D 12 235 434179 2323.84 782 761 186.5
D 14 35 138627 739.19 782 761 186.5
D 7 238 125818 670.51 782 761 186.5

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