ASTROSAT CZTI

Data Quality Report

Orbit 25748

Creation date: 2024-06-27T19:21:04.563108
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/AS1A09_033T01_9000003750_25748cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25748cztM0_level2_quad_clean.evt
Size (bytes)505,298,88089,205,120
Size481.9 MB 85.1 MB
Events in quadrant A3,290,397579,221
Events in quadrant B3,790,280580,367
Events in quadrant C3,669,478554,428
Events in quadrant D4,123,037545,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138920
B0154510
C0149830
D0165280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335420.662983%
B63361522.398990%
C63362023.188131%
D63361482.335859%

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 7535 6335 0 0 0.00% 0.00%
B 7536 6336 82 82 1.09% 1.29%
C 7536 6336 57 57 0.76% 0.90%
D 7536 6336 101 101 1.34% 1.59%

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 10296 55.83 852 837 169.4
A 3 137 7662 40.29 852 837 169.4
A 0 226 7149 37.26 852 837 169.4
B 15 222 432455 2688.4 848 829 160.6
B 12 111 18848 112.23 848 829 160.6
B 0 190 18122 107.71 848 829 160.6
C 3 233 329803 1716.14 820 828 191.7
C 14 238 133910 694.24 820 828 191.7
C 1 16 7653 35.6 820 828 191.7
D 1 52 427786 2135.75 829 807 199.9
D 8 195 161158 802.08 829 807 199.9
D 12 233 156323 777.89 829 807 199.9

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