ASTROSAT CZTI

Data Quality Report

Orbit 42567

Creation date: 2024-06-27T22:41:43.367723
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/AS1C07_001T10_9000005814_42567cztM0_level2.fits modeM0/AS1C07_001T10_9000005814_42567cztM0_level2_quad_clean.evt
Size (bytes)373,368,96093,274,560
Size356.1 MB 89.0 MB
Events in quadrant A3,140,421636,769
Events in quadrant B2,675,870635,879
Events in quadrant C2,677,189610,396
Events in quadrant D4,873,139533,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128902
B0122142
C01182110
D01868917

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5836240.411241%
B5836290.496916%
C583040.068611%
D58335198.897651%

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 7117 5837 11 11 0.15% 0.19%
B 7117 5837 22 22 0.31% 0.38%
C 7117 5835 3 3 0.04% 0.05%
D 7117 5836 441 441 6.20% 7.56%

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 10 83 646512 5049.99 624 612 127.9
A 15 237 31258 239.61 624 612 127.9
A 7 3 21743 165.21 624 612 127.9
B 5 172 128491 1076.35 615 597 118.8
B 0 245 75724 632.26 615 597 118.8
B 3 112 16649 135.09 615 597 118.8
C 15 214 243650 1725.53 606 609 140.9
C 3 233 23028 159.17 606 609 140.9
C 15 111 17831 122.27 606 609 140.9
D 2 16 1222107 8370.18 595 577 145.9
D 13 138 594880 4072.29 595 577 145.9
D 10 118 143773 981.21 595 577 145.9

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