ASTROSAT CZTI

Data Quality Report

Orbit 20210103_A10_110T04_9000004094_level2

Creation date: 2022-09-13T16:10:57.403027
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_110T04_9000004094cztM0_level2_bc.evt modeM0/AS1A10_110T04_9000004094cztM0_level2_quad_clean.evt
Size (bytes)3,097,454,400744,837,120
Size2.9 GB 710.3 MB
Events in quadrant A14,291,9974,888,740
Events in quadrant B25,864,0684,846,587
Events in quadrant C12,442,4664,832,908
Events in quadrant D37,532,6094,284,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240620
B01751610
C01182610
D02114160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011000
B011000
C011000
D011000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399713532.505695%
B53997735013.611867%
C5399713032.413097%
D539971045119.354779%

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 63326 53988 67 67 0.11% 0.12%
B 63326 53984 319 319 0.50% 0.59%
C 63326 53986 52 52 0.08% 0.10%
D 63326 53979 2083 2083 3.29% 3.86%

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 15 174 2311800 3541.66 3074 3028 651.9
A 13 254 85585 126.64 3074 3028 651.9
A 1 113 51951 75.05 3074 3028 651.9
B 10 245 13755888 25318.29 2932 2876 543.2
B 10 246 606535 1111.29 2932 2876 543.2
B 0 230 115174 206.73 2932 2876 543.2
C 7 247 393131 561.12 3013 3011 695.2
C 7 238 231067 328.02 3013 3011 695.2
C 3 233 180181 254.83 3013 3011 695.2
D 1 52 12380674 19404.35 2795 2710 637.9
D 8 195 9284160 14550.09 2795 2710 637.9
D 12 79 3207186 5023.51 2795 2710 637.9

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