ASTROSAT CZTI

Data Quality Report

Orbit 21915

Creation date: 2024-06-27T18:33:53.928427
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_100T03_9000003242_21915cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21915cztM0_level2_quad_clean.evt
Size (bytes)467,861,760133,266,240
Size446.2 MB 127.1 MB
Events in quadrant A3,260,330904,251
Events in quadrant B3,367,890924,358
Events in quadrant C3,487,902903,788
Events in quadrant D3,635,166874,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137452
B0140522
C0143612
D0149832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6161901.460802%
B6161991.606882%
C61611412.288590%
D61611252.028891%

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 7536 6161 12 12 0.16% 0.19%
B 7536 6161 20 20 0.27% 0.32%
C 7536 6161 16 16 0.21% 0.26%
D 7536 6161 50 50 0.66% 0.81%

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 4 2 79826 485.5 824 809 162.8
A 13 254 11079 63.1 824 809 162.8
A 0 226 7074 38.49 824 809 162.8
B 3 64 101877 675.01 825 806 149.7
B 12 111 16715 106.25 825 806 149.7
B 0 190 15152 95.81 825 806 149.7
C 10 22 176806 950.48 813 820 185.2
C 14 238 130040 697.9 813 820 185.2
C 0 10 13657 69.33 813 820 185.2
D 1 52 389614 2001.43 817 797 194.3
D 7 38 46391 234.69 817 797 194.3
D 5 32 37002 186.36 817 797 194.3

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