ASTROSAT CZTI

Data Quality Report

Orbit 38625

Creation date: 2024-06-27T21:54:18.192103
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_061T03_9000005390_38625cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38625cztM0_level2_quad_clean.evt
Size (bytes)159,252,48033,163,200
Size151.9 MB 31.6 MB
Events in quadrant A1,092,684228,570
Events in quadrant B1,311,558230,561
Events in quadrant C993,882225,054
Events in quadrant D2,340,978176,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043752
B051681
C040581
D083081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197680.404858%
B1976412.074899%
C197620.101215%
D197640220.344130%

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 3529 1977 5 5 0.14% 0.25%
B 3529 1977 22 22 0.62% 1.11%
C 3529 1977 0 0 0.00% 0.00%
D 3529 1977 382 382 10.82% 19.32%

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 179079 3688.0 230 226 48.5
A 13 6 7356 147.02 230 226 48.5
A 9 143 6575 130.92 230 226 48.5
B 4 171 213342 4607.92 228 221 46.3
B 5 184 86074 1856.24 228 221 46.3
B 0 183 37213 799.81 228 221 46.3
C 15 214 81989 1511.32 227 228 54.1
C 14 254 18452 336.86 227 228 54.1
C 0 10 5519 97.8 227 228 54.1
D 12 227 1082551 20330.9 211 204 53.2
D 2 16 138816 2603.7 211 204 53.2
D 5 222 120746 2264.27 211 204 53.2

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