ASTROSAT CZTI

Data Quality Report

Orbit 26690

Creation date: 2024-06-27T19:31:49.337546
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_145T01_9000003848_26690cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26690cztM0_level2_quad_clean.evt
Size (bytes)625,855,68093,337,920
Size596.9 MB 89.0 MB
Events in quadrant A3,141,421640,518
Events in quadrant B3,114,012648,722
Events in quadrant C3,397,068605,081
Events in quadrant D8,901,152519,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126480
B0126040
C0136120
D0304530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5907360.609446%
B5908530.897089%
C59081342.268111%
D5907259443.914000%

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 7157 5908 1 1 0.01% 0.02%
B 7158 5909 2 2 0.03% 0.03%
C 7158 5909 46 46 0.64% 0.78%
D 7157 5907 2169 2169 30.31% 36.72%

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 53470 331.5 801 791 158.9
A 13 254 9549 55.11 801 791 158.9
A 0 226 6983 38.97 801 791 158.9
B 12 111 17031 109.32 789 773 148.7
B 11 111 15194 96.97 789 773 148.7
B 14 111 13317 84.35 789 773 148.7
C 3 233 237256 1344.38 753 761 175.9
C 14 238 122627 692.76 753 761 175.9
C 1 0 96966 546.89 753 761 175.9
D 7 80 5582535 35177.16 588 579 158.7
D 1 52 973170 6129.21 588 579 158.7
D 2 250 82984 519.31 588 579 158.7

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