ASTROSAT CZTI

Data Quality Report

Orbit 17989

Creation date: 2024-06-27T17:43:30.178695
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/AS1A05_108T02_9000002676_17989cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17989cztM0_level2_quad_clean.evt
Size (bytes)496,422,72076,029,120
Size473.4 MB 72.5 MB
Events in quadrant A3,352,527472,213
Events in quadrant B3,361,107477,839
Events in quadrant C3,538,035455,192
Events in quadrant D4,346,397448,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140502
B0139852
C0144972
D0170942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433911.414581%
B64331001.554485%
C64321772.751866%
D64322794.337687%

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 7563 6433 5 5 0.07% 0.08%
B 7563 6434 2 2 0.03% 0.03%
C 7562 6432 17 17 0.22% 0.26%
D 7562 6432 173 173 2.29% 2.69%

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 14 237 109636 644.87 842 823 168.7
A 0 226 7445 39.24 842 823 168.7
A 12 194 6079 31.15 842 823 168.7
B 7 220 42117 260.23 835 812 158.7
B 10 247 19952 120.59 835 812 158.7
B 12 111 18266 109.96 835 812 158.7
C 0 207 155027 825.92 804 810 186.7
C 14 238 124578 662.84 804 810 186.7
C 3 233 107927 573.67 804 810 186.7
D 5 222 590428 2700.9 808 793 218.3
D 7 238 295266 1348.87 808 793 218.3
D 11 176 228136 1041.38 808 793 218.3

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