ASTROSAT CZTI

Data Quality Report

Orbit 39336

Creation date: 2024-06-27T22:03:24.442768
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/AS1A12_018T01_9000005470_39336cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39336cztM0_level2_quad_clean.evt
Size (bytes)471,922,56096,088,320
Size450.1 MB 91.6 MB
Events in quadrant A3,119,581664,525
Events in quadrant B3,137,763678,130
Events in quadrant C2,888,353638,295
Events in quadrant D7,861,673513,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128433
B0134272
C0122842
D0275402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5944120.201884%
B5944661.110363%
C594440.067295%
D5944114519.263122%

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 7226 5945 12 12 0.17% 0.20%
B 7226 5945 36 36 0.50% 0.61%
C 7226 5945 0 0 0.00% 0.00%
D 7226 5945 988 988 13.67% 16.62%

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 457569 3434.55 655 642 133.0
A 13 248 86149 642.73 655 642 133.0
A 2 79 24153 176.72 655 642 133.0
B 5 184 481105 3808.37 649 631 126.2
B 5 172 89431 703.85 649 631 126.2
B 12 111 15874 120.82 649 631 126.2
C 15 214 269046 1799.75 638 641 149.1
C 9 187 93889 625.26 638 641 149.1
C 14 254 13435 85.79 638 641 149.1
D 12 235 4694467 31742.23 598 580 147.9
D 13 249 259707 1752.34 598 580 147.9
D 12 227 232510 1568.42 598 580 147.9

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