ASTROSAT CZTI

Data Quality Report

Orbit 15655

Creation date: 2024-06-27T17:11:40.890989
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/AS1T02_086T01_9000002316_15655cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15655cztM0_level2_quad_clean.evt
Size (bytes)1,219,098,240206,130,240
Size1.1 GB 196.6 MB
Events in quadrant A7,763,6821,311,831
Events in quadrant B7,945,4341,327,277
Events in quadrant C7,611,9931,294,836
Events in quadrant D12,500,8511,187,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342772
B0342502
C0332292
D0485112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162551921.181175%
B16255590.362965%
C162551070.658259%
D1625515689.646263%

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 17366 16256 115 115 0.66% 0.71%
B 17366 16258 1 1 0.01% 0.01%
C 17366 16258 0 0 0.00% 0.00%
D 17366 16258 1631 1631 9.39% 10.03%

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 15 69 225147 588.99 1878 1835 379.1
A 13 248 216180 565.34 1878 1835 379.1
A 15 249 79891 205.88 1878 1835 379.1
B 4 216 131185 357.23 1893 1848 362.1
B 0 189 113457 308.27 1893 1848 362.1
B 4 173 49039 130.34 1893 1848 362.1
C 14 238 283601 668.78 1811 1822 421.3
C 3 233 176241 413.97 1811 1822 421.3
C 7 247 69428 160.46 1811 1822 421.3
D 1 52 5495381 12661.11 1771 1718 433.9
D 12 110 80653 181.92 1771 1718 433.9
D 2 234 66839 150.08 1771 1718 433.9

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