ASTROSAT CZTI

Data Quality Report

Orbit 20210306_A10_102T11_9000004230_level2

Creation date: 2021-03-08T20:00:01.811197
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_102T11_9000004230cztM0_level2_bc.evt modeM0/AS1A10_102T11_9000004230cztM0_level2_quad_clean.evt
Size (bytes)4,966,885,4401,092,101,760
Size4.6 GB 1.0 GB
Events in quadrant A19,200,8907,094,537
Events in quadrant B22,724,5877,202,251
Events in quadrant C48,274,3146,687,507
Events in quadrant D54,677,7596,492,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016640
B016640
C016640
D016640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01747670
B01891990
C02754040
D03076900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8164713391.639987%
B8164725803.159945%
C816471077713.199505%
D816471231215.079550%

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 93452 81650 42 42 0.04% 0.05%
B 93452 81650 163 163 0.17% 0.20%
C 93452 81648 1690 1690 1.81% 2.07%
D 93452 81648 2043 2043 2.19% 2.50%

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 1 113 1920915 2035.34 4403 4336 941.7
A 0 13 234577 244.51 4403 4336 941.7
A 13 254 142075 146.27 4403 4336 941.7
B 10 245 3420244 4119.98 4409 4308 829.1
B 0 229 1226487 1474.08 4409 4308 829.1
B 5 255 480888 574.81 4409 4308 829.1
C 3 233 31886587 33151.39 4064 4058 961.7
C 10 9 456528 470.48 4064 4058 961.7
C 2 114 155189 157.15 4064 4058 961.7
D 8 195 15074538 16162.43 4084 3955 932.4
D 1 52 11235441 12045.2 4084 3955 932.4
D 12 33 5949103 6375.87 4084 3955 932.4

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