ASTROSAT CZTI

Data Quality Report

Orbit 18846

Creation date: 2024-06-27T17:55:35.961451
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_194T13_9000002814_18846cztM0_level2.evt modeM0/AS1A05_194T13_9000002814_18846cztM0_level2_quad_clean.evt
Size (bytes)506,252,16073,175,040
Size482.8 MB 69.8 MB
Events in quadrant A3,448,094461,722
Events in quadrant B3,694,588463,831
Events in quadrant C3,492,536433,988
Events in quadrant D4,274,206421,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139012
B0147392
C0139422
D0164382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6235590.946271%
B62351181.892542%
C6235931.491580%
D62342343.753609%

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 7590 6236 0 0 0.00% 0.00%
B 7590 6236 25 25 0.33% 0.40%
C 7590 6236 2 2 0.03% 0.03%
D 7589 6235 163 163 2.15% 2.61%

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 11 29 11543 60.72 886 871 175.8
A 10 1 10327 53.8 886 871 175.8
A 13 254 9754 50.54 886 871 175.8
B 7 220 139507 852.38 876 860 162.7
B 4 216 37833 227.3 876 860 162.7
B 0 229 29578 176.55 876 860 162.7
C 14 238 130720 684.0 822 832 189.9
C 3 233 112600 588.58 822 832 189.9
C 0 207 23089 117.21 822 832 189.9
D 1 20 582320 2885.59 829 806 201.5
D 1 52 287950 1424.86 829 806 201.5
D 7 238 152341 751.95 829 806 201.5

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