ASTROSAT CZTI

Data Quality Report

Orbit 44883

Creation date: 2024-06-27T23:07:37.663371
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_017T02_9000006032_44883cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44883cztM0_level2_quad_clean.evt
Size (bytes)559,555,200121,950,720
Size533.6 MB 116.3 MB
Events in quadrant A6,203,699798,387
Events in quadrant B4,292,918834,376
Events in quadrant C3,609,458825,232
Events in quadrant D6,028,350715,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240822
B0178782
C0159802
D0230545

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74603975.321716%
B74602923.914209%
C7460941.260054%
D74585647.562349%

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 8855 7462 20 20 0.23% 0.27%
B 8855 7462 47 47 0.53% 0.63%
C 8855 7462 15 15 0.17% 0.20%
D 8854 7461 337 337 3.81% 4.52%

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 2609061 14272.18 875 856 182.7
A 13 248 89534 485.25 875 856 182.7
A 10 248 82005 444.05 875 856 182.7
B 5 255 232789 1311.96 879 852 176.8
B 0 155 200461 1129.1 879 852 176.8
B 0 219 83212 465.87 879 852 176.8
C 14 254 70064 334.75 874 881 206.7
C 12 2 63210 301.59 874 881 206.7
C 2 14 32421 152.61 874 881 206.7
D 1 52 1407021 6508.84 850 823 216.0
D 13 249 546845 2527.36 850 823 216.0
D 11 176 220967 1018.97 850 823 216.0

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