ASTROSAT CZTI

Data Quality Report

Orbit 00863

Creation date: 2024-06-27T14:03:58.875250
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/AS1P01_156T01_9000000122_00863cztM0_level2.evt modeM0/AS1P01_156T01_9000000122_00863cztM0_level2_quad_clean.evt
Size (bytes)537,419,52020,427,840
Size512.5 MB 19.5 MB
Events in quadrant A3,925,18799,522
Events in quadrant B4,180,558100,098
Events in quadrant C3,830,30398,028
Events in quadrant D4,127,36393,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139040
B0146740
C0136370
D0145080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A317810.031466%
B3178521.636249%
C317900.000000%
D3179852.673797%

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 3178 3178 65 65 2.05% 2.05%
B 3178 3178 150 150 4.72% 4.72%
C 3179 3179 62 62 1.95% 1.95%
D 3179 3179 231 231 7.27% 7.27%

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 0 253 4578 14.2 1021 1028 249.9
A 11 79 4228 12.8 1021 1028 249.9
A 3 111 3093 8.26 1021 1028 249.9
B 0 184 110166 442.04 1035 1041 246.9
B 0 220 39641 156.36 1035 1041 246.9
B 5 249 38982 153.69 1035 1041 246.9
C 8 208 17338 59.87 965 995 273.0
C 3 111 12697 42.87 965 995 273.0
C 10 19 10162 33.58 965 995 273.0
D 2 16 161952 527.25 990 1001 305.3
D 12 22 157474 512.58 990 1001 305.3
D 7 207 13796 41.91 990 1001 305.3

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