ASTROSAT CZTI

Data Quality Report

Orbit 42475

Creation date: 2024-06-27T22:40:37.584698
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_001T10_9000005806_42475cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42475cztM0_level2_quad_clean.evt
Size (bytes)324,656,64084,686,400
Size309.6 MB 80.8 MB
Events in quadrant A2,766,296585,671
Events in quadrant B2,464,904584,022
Events in quadrant C2,345,130553,052
Events in quadrant D4,061,190499,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109852
B0106022
C0100172
D0153962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4879110.225456%
B4879310.635376%
C487980.163968%
D48793416.989137%

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 7033 4880 3 3 0.04% 0.06%
B 7033 4880 21 21 0.30% 0.43%
C 7033 4880 4 4 0.06% 0.08%
D 7033 4880 287 287 4.08% 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 10 83 572888 5177.89 544 534 110.5
A 12 189 43573 389.36 544 534 110.5
A 13 6 19920 175.38 544 534 110.5
B 0 186 201617 1993.62 530 517 100.9
B 5 172 80632 794.23 530 517 100.9
B 15 35 36023 351.99 530 517 100.9
C 15 214 209001 1728.24 521 524 120.6
C 15 111 67189 552.64 521 524 120.6
C 0 239 19387 156.37 521 524 120.6
D 12 233 920136 7356.16 518 503 125.0
D 1 52 326400 2606.85 518 503 125.0
D 2 16 163347 1302.59 518 503 125.0

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