ASTROSAT CZTI

Data Quality Report

Orbit 31038

Creation date: 2024-06-27T20:22:37.181679
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/AS1A10_071T63_9000004486_31038cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31038cztM0_level2_quad_clean.evt
Size (bytes)533,136,96075,539,520
Size508.4 MB 72.0 MB
Events in quadrant A3,219,089468,364
Events in quadrant B5,352,217465,693
Events in quadrant C3,382,307446,129
Events in quadrant D3,733,454435,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137982
B0207751
C0140571
D0154111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6764180.266115%
B6765771.138211%
C6765620.916482%
D6765550.813008%

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 7334 6765 0 0 0.00% 0.00%
B 7335 6765 6 6 0.08% 0.09%
C 7335 6766 0 0 0.00% 0.00%
D 7335 6765 54 54 0.74% 0.80%

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 13091 73.01 834 817 168.1
A 3 137 8759 47.24 834 817 168.1
A 0 226 7075 37.23 834 817 168.1
B 6 159 1881150 11619.27 828 807 161.8
B 0 190 128948 791.83 828 807 161.8
B 0 230 22828 136.08 828 807 161.8
C 14 238 129822 677.64 798 803 190.4
C 3 233 68333 354.68 798 803 190.4
C 0 10 35533 182.41 798 803 190.4
D 8 195 540268 2797.49 796 777 192.8
D 12 0 57141 292.27 796 777 192.8
D 2 250 56431 288.59 796 777 192.8

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