ASTROSAT CZTI

Data Quality Report

Orbit 27796

Creation date: 2024-06-27T19:44:30.708574
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/AS1A10_016T01_9000004016_27796cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27796cztM0_level2_quad_clean.evt
Size (bytes)651,844,800100,684,800
Size621.6 MB 96.0 MB
Events in quadrant A3,737,450655,009
Events in quadrant B4,177,738657,997
Events in quadrant C3,986,028635,996
Events in quadrant D7,317,433563,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161840
B0175570
C0169630
D0271270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7714640.829660%
B77142122.748250%
C77151852.397926%
D7715110514.322748%

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 8654 7716 0 0 0.00% 0.00%
B 8654 7714 41 41 0.47% 0.53%
C 8655 7716 2 2 0.02% 0.03%
D 8655 7715 953 953 11.01% 12.35%

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 13 254 13140 61.7 967 946 197.6
A 3 137 9502 43.29 967 946 197.6
A 0 226 8199 36.7 967 946 197.6
B 3 64 136069 737.22 959 935 183.3
B 10 245 131982 714.92 959 935 183.3
B 4 52 67148 361.22 959 935 183.3
C 3 233 203392 927.37 929 937 218.3
C 14 238 148192 674.52 929 937 218.3
C 15 208 8541 34.83 929 937 218.3
D 1 52 3795006 18005.1 868 842 210.7
D 2 250 143015 674.68 868 842 210.7
D 14 35 34909 161.66 868 842 210.7

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