ASTROSAT CZTI

Data Quality Report

Orbit 27700

Creation date: 2024-06-27T19:43:17.614793
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/AS1T03_262T01_9000003988_27700cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27700cztM0_level2_quad_clean.evt
Size (bytes)427,913,280103,115,520
Size408.1 MB 98.3 MB
Events in quadrant A2,944,035689,263
Events in quadrant B3,156,970690,190
Events in quadrant C3,158,085662,604
Events in quadrant D3,278,993648,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128790
B0134200
C0131970
D0139060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188490.791855%
B6189550.888673%
C6189791.276458%
D6189801.292616%

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 7173 6188 0 0 0.00% 0.00%
B 7174 6189 2 2 0.03% 0.03%
C 7174 6189 0 0 0.00% 0.00%
D 7174 6189 52 52 0.72% 0.84%

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 13 254 9294 55.56 762 745 153.9
A 3 137 7113 41.39 762 745 153.9
A 0 226 6522 37.55 762 745 153.9
B 0 230 112283 772.5 753 733 144.4
B 3 64 47024 320.57 753 733 144.4
B 0 190 43280 294.65 753 733 144.4
C 3 233 156598 911.66 732 737 171.0
C 14 238 115626 672.01 732 737 171.0
C 8 208 26798 152.44 732 737 171.0
D 11 176 165252 933.91 737 717 176.2
D 1 52 152873 863.64 737 717 176.2
D 2 250 80793 454.51 737 717 176.2

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