ASTROSAT CZTI

Data Quality Report

Orbit 40625

Creation date: 2024-06-27T22:18:24.161733
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/AS1A12_012T01_9000005554_40625cztM0_level2.fits modeM0/AS1A12_012T01_9000005554_40625cztM0_level2_quad_clean.evt
Size (bytes)133,634,88034,614,720
Size127.4 MB 33.0 MB
Events in quadrant A1,185,115236,763
Events in quadrant B1,216,754239,977
Events in quadrant C1,040,215228,931
Events in quadrant D1,335,567187,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047652
B049981
C043941
D054151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213670.327715%
B2136341.591760%
C213670.327715%
D213632715.308989%

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 3448 2137 2 2 0.06% 0.09%
B 3447 2136 19 19 0.55% 0.89%
C 3448 2137 5 5 0.15% 0.23%
D 3447 2136 57 57 1.65% 2.67%

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 10 83 220861 4288.56 243 238 51.4
A 2 79 14728 281.66 243 238 51.4
A 12 189 5585 103.94 243 238 51.4
B 0 229 79623 1651.87 239 232 48.1
B 5 255 66125 1371.02 239 232 48.1
B 15 85 54195 1122.79 239 232 48.1
C 15 214 94574 1694.33 232 233 55.7
C 0 10 16888 299.12 232 233 55.7
C 14 254 15866 280.76 232 233 55.7
D 12 227 130430 2371.16 218 211 54.9
D 13 249 89985 1634.69 218 211 54.9
D 12 191 82249 1493.83 218 211 54.9

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