ASTROSAT CZTI

Data Quality Report

Orbit 38321

Creation date: 2024-06-27T21:51:15.657036
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_001T12_9000005372_38321cztM0_level2.fits modeM0/AS1C07_001T12_9000005372_38321cztM0_level2_quad_clean.evt
Size (bytes)511,606,08091,255,680
Size487.9 MB 87.0 MB
Events in quadrant A2,940,600644,676
Events in quadrant B2,901,716655,095
Events in quadrant C2,747,506640,998
Events in quadrant D9,895,753414,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125383
B0127802
C0119042
D0334372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5828120.205903%
B5828230.394647%
C5828120.205903%
D5828188732.378174%

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 7321 5829 7 7 0.10% 0.12%
B 7321 5829 7 7 0.10% 0.12%
C 7321 5829 7 7 0.10% 0.12%
D 7321 5828 1495 1495 20.42% 25.65%

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 401382 3127.07 630 616 128.2
A 12 189 31661 242.24 630 616 128.2
A 13 6 21468 162.7 630 616 128.2
B 5 184 210185 1735.58 627 609 120.8
B 0 183 125930 1037.83 627 609 120.8
B 0 229 30214 245.17 627 609 120.8
C 15 214 247689 1721.42 617 620 143.5
C 1 23 50104 344.77 617 620 143.5
C 14 67 21918 148.39 617 620 143.5
D 10 203 4137834 32058.58 529 514 129.1
D 2 16 2480550 19216.89 529 514 129.1
D 12 235 708374 5484.95 529 514 129.1

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