ASTROSAT CZTI

Data Quality Report

Orbit 39021

Creation date: 2024-06-27T21:59:27.422472
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_001T02_9000005426_39021cztM0_level2.fits modeM0/AS1C07_001T02_9000005426_39021cztM0_level2_quad_clean.evt
Size (bytes)328,080,96094,043,520
Size312.9 MB 89.7 MB
Events in quadrant A3,271,476630,904
Events in quadrant B2,640,644641,259
Events in quadrant C2,634,510612,226
Events in quadrant D3,154,485565,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133193
B0119012
C0114432
D0131632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5689270.474600%
B5689721.265600%
C568930.052733%
D5689631.107400%

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 7240 5689 12 12 0.17% 0.21%
B 7240 5688 51 51 0.70% 0.90%
C 7240 5688 0 0 0.00% 0.00%
D 7240 5688 69 69 0.95% 1.21%

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 435889 3438.43 626 614 126.6
A 6 10 246320 1940.94 626 614 126.6
A 12 16 64087 501.4 626 614 126.6
B 5 172 192861 1608.59 616 600 119.5
B 0 230 24781 202.32 616 600 119.5
B 12 111 14988 120.38 616 600 119.5
C 15 214 241748 1715.02 606 610 140.6
C 1 128 19764 136.23 606 610 140.6
C 13 61 4182 25.4 606 610 140.6
D 12 227 403143 2730.23 605 588 147.4
D 12 235 155798 1052.67 605 588 147.4
D 2 250 78007 525.07 605 588 147.4

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