ASTROSAT CZTI

Data Quality Report

Orbit 20210507_A10_071T23_9000004356_level2

Creation date: 2021-05-13T15:20:19.125448
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_071T23_9000004356cztM0_level2_bc.evt modeM0/AS1A10_071T23_9000004356cztM0_level2_quad_clean.evt
Size (bytes)1,756,359,360492,082,560
Size1.6 GB 469.3 MB
Events in quadrant A11,210,3903,158,187
Events in quadrant B19,856,5723,155,646
Events in quadrant C10,585,3353,046,537
Events in quadrant D9,053,5253,036,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880860
B01181520
C0884060
D0795190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07440
B07440
C07440
D07440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3650717134.692251%
B3650713863.796532%
C3650714303.917057%
D365075061.386036%

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 40627 36503 407 407 1.00% 1.11%
B 40627 36501 17 17 0.04% 0.05%
C 40627 36503 0 0 0.00% 0.00%
D 40627 36503 17 17 0.04% 0.05%

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 14 239 3871825 9499.93 1873 1833 407.4
A 8 192 66393 158.48 1873 1833 407.4
A 13 254 59872 142.47 1873 1833 407.4
B 6 159 9589969 26240.88 1889 1841 365.4
B 6 36 2774664 7588.69 1889 1841 365.4
B 0 183 155502 420.54 1889 1841 365.4
C 3 233 3483796 8032.87 1817 1804 433.5
C 2 114 68697 154.32 1817 1804 433.5
C 14 254 42637 94.2 1817 1804 433.5
D 8 195 678855 1433.33 1858 1803 472.4
D 13 104 641173 1353.55 1858 1803 472.4
D 2 250 261240 549.23 1858 1803 472.4

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