ASTROSAT CZTI

Data Quality Report

Orbit 46504

Creation date: 2024-06-27T23:23:57.812780
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/AS1A13_068T06_9000006220_46504cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46504cztM0_level2_quad_clean.evt
Size (bytes)478,022,400110,171,520
Size455.9 MB 105.1 MB
Events in quadrant A6,045,542739,313
Events in quadrant B3,704,698775,436
Events in quadrant C3,026,319744,295
Events in quadrant D4,424,823633,590

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217561
B0150451
C0132412
D0174201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63582043.208556%
B63591822.862085%
C6358230.361749%
D63584887.675370%

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 7588 6359 37 37 0.49% 0.58%
B 7589 6360 87 87 1.15% 1.37%
C 7588 6359 6 6 0.08% 0.09%
D 7588 6358 359 359 4.73% 5.65%

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 3060337 19323.46 764 749 158.3
A 9 191 11633 68.74 764 749 158.3
A 13 254 9922 57.93 764 749 158.3
B 0 190 303728 2022.39 763 739 149.8
B 5 255 211714 1408.22 763 739 149.8
B 5 172 109178 723.81 763 739 149.8
C 14 254 82728 464.64 749 754 176.4
C 1 3 9610 50.2 749 754 176.4
C 9 54 8867 45.99 749 754 176.4
D 13 249 811203 4515.56 720 700 179.5
D 7 80 492725 2741.22 720 700 179.5
D 1 52 159628 885.44 720 700 179.5

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