ASTROSAT CZTI

Data Quality Report

Orbit 26722

Creation date: 2024-06-27T19:32:08.549646
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_223T01_9000003850_26722cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26722cztM0_level2_quad_clean.evt
Size (bytes)593,876,16071,259,840
Size566.4 MB 68.0 MB
Events in quadrant A3,406,484436,604
Events in quadrant B5,114,653441,918
Events in quadrant C3,256,917431,019
Events in quadrant D5,783,801411,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136600
B0190100
C0131000
D0214260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62511332.127660%
B625176312.206047%
C62521191.903391%
D625271811.484325%

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 7426 6251 34 34 0.46% 0.54%
B 7426 6252 510 510 6.87% 8.16%
C 7427 6253 0 0 0.00% 0.00%
D 7427 6253 541 541 7.28% 8.65%

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 0 13 173937 1043.95 837 822 165.8
A 13 254 10304 57.18 837 822 165.8
A 3 137 7351 39.37 837 822 165.8
B 0 189 1845490 12543.53 780 763 147.1
B 10 246 190695 1291.47 780 763 147.1
B 12 111 17442 113.41 780 763 147.1
C 14 238 127830 690.58 794 803 183.9
C 15 208 22535 118.15 794 803 183.9
C 6 80 5716 26.71 794 803 183.9
D 1 52 2128331 10219.91 776 761 208.2
D 2 250 334099 1601.21 776 761 208.2
D 7 80 275281 1318.67 776 761 208.2

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