ASTROSAT CZTI

Data Quality Report

Orbit 25206

Creation date: 2024-06-27T19:15:05.837711
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_097T01_9000003692_25206cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25206cztM0_level2_quad_clean.evt
Size (bytes)177,621,12033,431,040
Size169.4 MB 31.9 MB
Events in quadrant A1,173,970215,770
Events in quadrant B1,246,673217,575
Events in quadrant C1,204,185207,569
Events in quadrant D1,593,641202,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049850
B051930
C050130
D063890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2337371.583226%
B2337783.337612%
C2337833.551562%
D2337472.011125%

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 2722 2338 0 0 0.00% 0.00%
B 2722 2338 2 2 0.07% 0.09%
C 2722 2338 0 0 0.00% 0.00%
D 2722 2338 1 1 0.04% 0.04%

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 5 203 4920 71.79 303 295 64.4
A 13 254 3727 53.27 303 295 64.4
A 3 137 2962 41.39 303 295 64.4
B 3 64 38584 621.46 303 296 61.6
B 10 251 12197 193.17 303 296 61.6
B 12 111 7762 121.18 303 296 61.6
C 14 238 46148 636.45 293 295 72.0
C 3 233 10893 147.1 293 295 72.0
C 7 247 2197 26.4 293 295 72.0
D 8 195 272139 3686.5 294 285 73.7
D 7 238 97009 1311.63 294 285 73.7
D 2 244 37226 500.94 294 285 73.7

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