ASTROSAT CZTI

Data Quality Report

Orbit 39785

Creation date: 2024-06-27T22:08:59.757892
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/AS1T05_086T01_9000005496_39785cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39785cztM0_level2_quad_clean.evt
Size (bytes)461,992,320106,862,400
Size440.6 MB 101.9 MB
Events in quadrant A3,397,912758,152
Events in quadrant B3,971,401741,286
Events in quadrant C6,062,912658,253
Events in quadrant D3,207,692662,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140333
B0158062
C0220502
D0136122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5943480.807673%
B59432784.677772%
C594368811.576645%
D5943931.564866%

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 7224 5943 34 34 0.47% 0.57%
B 7224 5943 203 203 2.81% 3.42%
C 7224 5943 601 601 8.32% 10.11%
D 7224 5943 79 79 1.09% 1.33%

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 505456 3524.83 680 667 143.2
A 9 143 130013 903.19 680 667 143.2
A 2 79 61358 423.79 680 667 143.2
B 5 255 572784 4294.45 667 650 133.2
B 5 172 289657 2169.29 667 650 133.2
B 5 32 273616 2048.89 667 650 133.2
C 9 187 2640297 17033.8 640 647 155.0
C 15 208 415475 2676.91 640 647 155.0
C 14 254 248121 1596.96 640 647 155.0
D 6 240 140789 838.24 664 648 167.2
D 12 233 110498 657.06 664 648 167.2
D 10 246 108423 644.65 664 648 167.2

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