ASTROSAT CZTI

Data Quality Report

Orbit 39067

Creation date: 2024-06-27T21:59:58.264287
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_077T06_9000005430_39067cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39067cztM0_level2_quad_clean.evt
Size (bytes)473,443,20089,000,640
Size451.5 MB 84.9 MB
Events in quadrant A4,108,035571,920
Events in quadrant B2,525,792639,414
Events in quadrant C4,907,967567,987
Events in quadrant D5,565,446538,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154853
B0110152
C0180442
D0203862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53885129.502598%
B538820.037120%
C53884488.314774%
D53883205.939124%

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 7120 5388 354 354 4.97% 6.57%
B 7120 5389 0 0 0.00% 0.00%
C 7120 5389 547 547 7.68% 10.15%
D 7120 5389 317 317 4.45% 5.88%

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 15 222 1414394 12219.27 575 562 115.7
A 10 83 394611 3405.63 575 562 115.7
A 13 248 36040 306.62 575 562 115.7
B 0 230 49852 422.69 607 590 116.5
B 15 85 48184 408.38 607 590 116.5
B 0 190 19236 159.99 607 590 116.5
C 15 208 2388300 17602.7 581 585 135.6
C 15 214 225676 1659.41 581 585 135.6
C 3 233 15092 106.95 581 585 135.6
D 12 235 2348020 16444.19 583 566 142.8
D 2 249 270082 1887.99 583 566 142.8
D 13 249 242546 1695.1 583 566 142.8

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