ASTROSAT CZTI

Data Quality Report

Orbit 25897

Creation date: 2024-06-27T19:22:36.026629
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/AS1A07_068T01_9000003756_25897cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25897cztM0_level2_quad_clean.evt
Size (bytes)16,871,0404,023,360
Size16.1 MB 3.8 MB
Events in quadrant A128,03024,622
Events in quadrant B110,08426,308
Events in quadrant C110,19524,556
Events in quadrant D145,82323,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B04540
C04500
D05540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17121.169591%
B18321.092896%
C19131.570681%
D18294.945055%

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 4475 196 0 0 0.00% 0.00%
B 4607 211 0 0 0.00% 0.00%
C 4620 223 0 0 0.00% 0.00%
D 4483 214 2 2 0.04% 0.93%

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 13 26614 3660.2 26 25 7.3
A 13 254 293 36.89 26 25 7.3
A 3 137 247 30.56 26 25 7.3
B 0 190 1691 229.42 27 26 7.3
B 4 187 1098 147.71 27 26 7.3
B 12 111 591 77.85 27 26 7.3
C 14 238 4497 567.05 26 26 7.9
C 3 233 2412 302.61 26 26 7.9
C 13 61 194 21.31 26 26 7.9
D 1 52 46145 5800.87 25 25 8.0
D 3 238 1074 131.94 25 25 8.0
D 2 234 559 67.17 25 25 8.0

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