ASTROSAT CZTI

Data Quality Report

Orbit 21728

Creation date: 2024-06-27T18:31:31.791905
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_010T04_9000003220_21728cztM0_level2.evt modeM0/AS1A07_010T04_9000003220_21728cztM0_level2_quad_clean.evt
Size (bytes)612,383,040104,938,560
Size584.0 MB 100.1 MB
Events in quadrant A3,405,794688,855
Events in quadrant B3,371,961717,854
Events in quadrant C3,231,032694,045
Events in quadrant D8,092,125618,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144172
B0141802
C0135742
D0285362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573761.156245%
B6573550.836756%
C6573640.973680%
D6573129819.747452%

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 6574 48 48 0.62% 0.73%
B 7738 6574 15 15 0.19% 0.23%
C 7738 6574 0 0 0.00% 0.00%
D 7738 6574 1278 1278 16.52% 19.44%

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 15 236 153375 952.69 798 780 160.2
A 6 16 113152 701.57 798 780 160.2
A 2 79 66501 410.31 798 780 160.2
B 3 64 140559 935.99 807 787 149.3
B 0 230 34639 226.69 807 787 149.3
B 0 189 19077 122.48 807 787 149.3
C 14 238 124808 669.72 796 801 185.2
C 13 61 5611 25.98 796 801 185.2
C 3 202 2051 6.75 796 801 185.2
D 12 235 4454361 24610.19 747 727 181.0
D 7 223 579516 3198.31 747 727 181.0
D 14 35 110804 608.27 747 727 181.0

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