ASTROSAT CZTI

Data Quality Report

Orbit 20210625_A10_071T69_9000004488_level2

Creation date: 2021-07-19T15:03:27.674060
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_071T69_9000004488cztM0_level2_bc.evt modeM0/AS1A10_071T69_9000004488cztM0_level2_quad_clean.evt
Size (bytes)585,403,200123,353,280
Size558.3 MB 117.6 MB
Events in quadrant A2,507,905758,360
Events in quadrant B6,140,661754,823
Events in quadrant C2,738,476718,703
Events in quadrant D5,519,655673,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247650
B0369500
C0258340
D0359740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11996560.466822%
B119962902.417472%
C119962652.209070%
D119968066.718906%

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 13826 11996 0 0 0.00% 0.00%
B 13826 11996 0 0 0.00% 0.00%
C 13825 11995 0 0 0.00% 0.00%
D 13826 11996 54 54 0.39% 0.45%

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 21062 145.02 644 633 140.9
A 12 96 14352 97.39 644 633 140.9
A 0 226 4045 24.22 644 633 140.9
B 6 159 3374056 27135.03 646 631 124.3
B 4 80 114799 918.34 646 631 124.3
B 0 190 60319 480.12 646 631 124.3
C 0 10 122993 838.39 616 613 146.0
C 3 233 89868 611.46 616 613 146.0
C 15 208 46813 316.5 616 613 146.0
D 8 195 1291555 9247.32 604 585 139.6
D 13 174 1278195 9151.62 604 585 139.6
D 6 219 246208 1759.42 604 585 139.6

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