ASTROSAT CZTI

Data Quality Report

Orbit 27358

Creation date: 2024-06-27T19:39:17.937731
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/AS1A09_038T13_9000003928_27358cztM0_level2.evt modeM0/AS1A09_038T13_9000003928_27358cztM0_level2_quad_clean.evt
Size (bytes)257,880,96055,512,000
Size245.9 MB 52.9 MB
Events in quadrant A1,594,008384,137
Events in quadrant B1,616,967389,157
Events in quadrant C2,496,872337,835
Events in quadrant D1,902,996362,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066210
B066210
C093770
D075160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29141174.015100%
B29131314.497082%
C291349416.958462%
D29131605.492619%

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 4189 2914 0 0 0.00% 0.00%
B 4188 2913 0 0 0.00% 0.00%
C 4188 2913 180 180 4.30% 6.18%
D 4188 2913 28 28 0.67% 0.96%

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 8145 95.81 410 402 80.8
A 13 254 5129 58.49 410 402 80.8
A 3 137 3611 39.71 410 402 80.8
B 7 205 12295 155.61 406 397 76.5
B 12 111 8677 108.29 406 397 76.5
B 11 111 7704 95.57 406 397 76.5
C 2 16 984380 11523.03 370 372 85.4
C 14 238 60990 709.85 370 372 85.4
C 15 208 9452 106.33 370 372 85.4
D 1 52 271660 2911.33 395 385 93.2
D 2 250 90994 972.42 395 385 93.2
D 2 120 24489 258.68 395 385 93.2

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