ASTROSAT CZTI

Data Quality Report

Orbit 20240823_C09_004T05_9000006408_level2

Creation date: 2024-08-26T15:48:26.794764
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/AS1C09_004T05_9000006408cztM0_level2.fits modeM0/AS1C09_004T05_9000006408cztM0_level2_quad_clean.evt
Size (bytes)724,328,640938,243,520
Size690.8 MB 894.8 MB
Events in quadrant A5,046,4867,596,414
Events in quadrant B309,162929
Events in quadrant C5,214,4127,437,518
Events in quadrant D4,270,4126,342,185

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020760
B020760
C020760
D020760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03937330
B01118920
C02203330
D03025490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10268837453.646969%
B10268810267599.987340%
C10268712051.173469%
D1026871048710.212588%

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 112933 102689 0 0 0.00% 0.00%
B 112929 41054 0 0 0.00% 0.00%
C 112933 102656 0 0 0.00% 0.00%
D 112933 101929 0 0 0.00% 0.00%

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 7 110 4173 8.65 1320 1236 339.6
A 14 95 3858 7.72 1320 1236 339.6
A 7 30 3817 7.6 1320 1236 339.6
B 2 9 317 11.24 83 80 21.1
B 3 17 247 7.92 83 80 21.1
B 14 254 237 7.45 83 80 21.1
C 3 202 4038 7.74 1379 1283 356.0
C 1 80 3877 7.29 1379 1283 356.0
C 1 81 3851 7.21 1379 1283 356.0
D 6 38 3184 6.07 1225 1106 342.5
D 10 189 3114 5.86 1225 1106 342.5
D 3 14 3098 5.82 1225 1106 342.5

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