ASTROSAT CZTI

Data Quality Report

Orbit 24761

Creation date: 2024-06-27T19:09:35.261601
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_147T01_9000003624_24761cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24761cztM0_level2_quad_clean.evt
Size (bytes)501,955,20090,377,280
Size478.7 MB 86.2 MB
Events in quadrant A3,191,644585,415
Events in quadrant B4,653,053569,610
Events in quadrant C3,362,003562,792
Events in quadrant D3,537,775549,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137602
B0181532
C0141362
D0150412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6738230.341348%
B67383925.817750%
C6738550.816266%
D6738801.187296%

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 7678 6739 0 0 0.00% 0.00%
B 7678 6739 252 252 3.28% 3.74%
C 7678 6739 0 0 0.00% 0.00%
D 7678 6739 58 58 0.76% 0.86%

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 10102 55.92 824 805 166.3
A 4 2 8826 48.24 824 805 166.3
A 3 137 7571 40.7 824 805 166.3
B 3 64 1431440 9219.27 798 777 155.2
B 0 189 67611 430.68 798 777 155.2
B 12 111 19070 117.88 798 777 155.2
C 14 238 123149 656.74 787 793 186.3
C 7 247 95336 507.45 787 793 186.3
C 5 112 40441 212.81 787 793 186.3
D 7 238 235852 1222.52 792 768 192.3
D 8 195 159465 825.28 792 768 192.3
D 1 52 79120 407.46 792 768 192.3

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