ASTROSAT CZTI

Data Quality Report

Orbit 13796

Creation date: 2024-06-27T16:46:14.004378
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/AS1A04_199T01_9000002040_13796cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13796cztM0_level2_quad_clean.evt
Size (bytes)475,485,12068,497,920
Size453.5 MB 65.3 MB
Events in quadrant A3,439,842406,471
Events in quadrant B3,620,618409,384
Events in quadrant C3,306,999401,063
Events in quadrant D3,573,873386,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142433
B0148322
C0140342
D0149052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67501031.525926%
B67501692.503704%
C6750761.125926%
D67501201.777778%

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 7721 6751 1 1 0.01% 0.01%
B 7721 6751 27 27 0.35% 0.40%
C 7721 6752 3 3 0.04% 0.04%
D 7721 6752 47 47 0.61% 0.70%

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 8 15 130189 743.26 852 835 174.0
A 1 162 14920 80.93 852 835 174.0
A 0 23 10425 55.1 852 835 174.0
B 0 219 126454 770.27 851 831 163.1
B 15 222 89112 541.3 851 831 163.1
B 12 111 19064 111.79 851 831 163.1
C 3 233 70325 361.32 825 829 192.3
C 14 234 15051 73.94 825 829 192.3
C 13 61 5914 26.44 825 829 192.3
D 1 52 300998 1513.21 814 793 198.4
D 10 157 78912 393.77 814 793 198.4
D 13 249 50987 253.01 814 793 198.4

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