ASTROSAT CZTI

Data Quality Report

Orbit 18695

Creation date: 2024-06-27T17:53:31.208404
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_072T04_9000002794_18695cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18695cztM0_level2_quad_clean.evt
Size (bytes)752,008,320135,216,000
Size717.2 MB 129.0 MB
Events in quadrant A5,166,211836,753
Events in quadrant B5,201,817857,870
Events in quadrant C5,757,239833,966
Events in quadrant D5,914,080815,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225052
B0224612
C0243762
D0251522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108531141.050401%
B10854950.875253%
C108542202.026903%
D108542081.916344%

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 12338 10855 25 25 0.20% 0.23%
B 12339 10855 4 4 0.03% 0.04%
C 12339 10856 50 50 0.41% 0.46%
D 12339 10856 114 114 0.92% 1.05%

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 6 16 127611 483.34 1290 1264 261.4
A 15 192 19498 69.75 1290 1264 261.4
A 13 254 16487 58.24 1290 1264 261.4
B 0 190 58520 233.82 1289 1257 244.9
B 0 197 32844 128.98 1289 1257 244.9
B 12 111 30359 118.83 1289 1257 244.9
C 3 233 638921 2200.36 1236 1243 289.8
C 14 238 192029 658.32 1236 1243 289.8
C 0 207 54177 182.65 1236 1243 289.8
D 1 52 939594 3087.2 1250 1211 304.0
D 7 238 230775 755.25 1250 1211 304.0
D 2 234 46067 147.57 1250 1211 304.0

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