ASTROSAT CZTI

Data Quality Report

Orbit 19918

Creation date: 2024-06-27T18:08:46.017477
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_064T01_9000002964_19918cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19918cztM0_level2_quad_clean.evt
Size (bytes)893,522,88095,014,080
Size852.1 MB 90.6 MB
Events in quadrant A2,970,280756,303
Events in quadrant B4,513,859758,637
Events in quadrant C5,170,503727,151
Events in quadrant D13,984,004197,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129581
B0178151
C0196281
D0458107

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243140.224251%
B62431241.986225%
C62436059.690854%
D6242578492.662608%

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 7498 6244 2 2 0.03% 0.03%
B 7498 6243 41 41 0.55% 0.66%
C 7498 6243 230 230 3.07% 3.68%
D 7496 6241 4898 4898 65.34% 78.48%

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 5 16 52948 344.73 756 741 151.4
A 8 35 7559 45.02 756 741 151.4
A 0 226 6651 39.02 756 741 151.4
B 3 112 1289667 9127.82 764 746 141.2
B 0 197 49990 348.73 764 746 141.2
B 4 216 42075 292.68 764 746 141.2
C 9 221 1526428 8992.35 733 738 169.7
C 4 254 620465 3652.64 733 738 169.7
C 14 238 115543 676.66 733 738 169.7
D 2 184 8740115 128138.9 275 267 68.2
D 7 38 2740353 40173.65 275 267 68.2
D 12 218 1191093 17459.24 275 267 68.2

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