ASTROSAT CZTI

Data Quality Report

Orbit 04294

Creation date: 2024-06-27T14:40:01.570722
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/AS1G05_256T01_9000000538_04294cztM0_level2.evt modeM0/AS1G05_256T01_9000000538_04294cztM0_level2_quad_clean.evt
Size (bytes)862,833,60088,413,120
Size822.9 MB 84.3 MB
Events in quadrant A4,885,541629,926
Events in quadrant B3,426,312634,968
Events in quadrant C12,724,826351,214
Events in quadrant D4,666,880617,351

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189502
B0146471
C0422151
D0183641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632968210.775794%
B63291662.622847%
C6329500179.017222%
D63294056.399115%

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 7354 6329 550 550 7.48% 8.69%
B 7354 6329 117 117 1.59% 1.85%
C 7353 6328 4547 4547 61.84% 71.86%
D 7354 6330 341 341 4.64% 5.39%

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 0 199 1165014 8267.37 682 668 140.8
A 15 234 952423 6757.88 682 668 140.8
A 0 226 113442 800.74 682 668 140.8
B 14 167 636030 4748.41 698 681 133.8
B 15 85 14414 102.64 698 681 133.8
B 10 16 13895 98.76 698 681 133.8
C 9 144 11064113 117152.77 405 406 94.4
C 9 247 58884 619.22 405 406 94.4
C 10 65 6700 66.65 405 406 94.4
D 2 232 1715931 10733.69 662 643 159.8
D 2 136 113571 706.67 662 643 159.8
D 13 239 58905 364.58 662 643 159.8

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