ASTROSAT CZTI

Data Quality Report

Orbit 43570

Creation date: 2024-06-27T22:53:17.553608
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/AS1A05_174T01_9000005880_43570cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43570cztM0_level2_quad_clean.evt
Size (bytes)1,232,640,00089,282,880
Size1.1 GB 85.1 MB
Events in quadrant A9,444,820727,354
Events in quadrant B6,348,319777,260
Events in quadrant C15,940,546532,938
Events in quadrant D13,347,275164,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331132
B0240462
C0522472
D0445062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7093135219.061046%
B70934506.344283%
C7093548377.301565%
D7092708499.887197%

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 7838 7093 917 917 11.70% 12.93%
B 7838 7093 147 147 1.88% 2.07%
C 7837 7092 4889 4889 62.38% 68.94%
D 7836 7091 2744 2744 35.02% 38.70%

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 15 222 2947916 18155.72 778 759 162.3
A 10 99 1300705 8008.21 778 759 162.3
A 0 228 1087399 6694.16 778 759 162.3
B 4 206 2357741 14654.18 803 778 160.8
B 3 25 334439 2074.5 803 778 160.8
B 0 199 161306 998.07 803 778 160.8
C 15 142 7541864 55755.6 568 570 135.3
C 15 174 3436016 25399.53 568 570 135.3
C 15 126 758699 5605.13 568 570 135.3
D 4 216 5190635 78827.99 220 210 65.8
D 4 212 3169408 48131.22 220 210 65.8
D 14 210 686175 10417.88 220 210 65.8

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