ASTROSAT CZTI

Data Quality Report

Orbit 43815

Creation date: 2024-06-27T22:56:07.219900
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_018T01_9000005906_43815cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43815cztM0_level2_quad_clean.evt
Size (bytes)839,413,440127,503,360
Size800.5 MB 121.6 MB
Events in quadrant A6,408,244903,955
Events in quadrant B5,032,188931,340
Events in quadrant C9,942,497692,419
Events in quadrant D9,035,687744,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251582
B0206472
C0353363
D0327222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84513704.378180%
B84513123.691871%
C8450222826.366864%
D8451118514.022009%

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 8730 8452 159 159 1.82% 1.88%
B 8731 8453 115 115 1.32% 1.36%
C 8730 8451 1896 1896 21.72% 22.44%
D 8731 8453 1019 1019 11.67% 12.05%

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 1195764 5836.14 974 951 204.7
A 15 223 788051 3844.64 974 951 204.7
A 14 254 401195 1955.02 974 951 204.7
B 0 200 387281 1995.05 977 947 193.6
B 5 235 182732 938.75 977 947 193.6
B 4 170 169545 870.65 977 947 193.6
C 15 174 4066912 19857.57 867 872 204.8
C 15 158 1398708 6826.7 867 872 204.8
C 3 233 380512 1854.07 867 872 204.8
D 10 102 1103185 4816.9 910 883 228.8
D 12 33 941177 4108.95 910 883 228.8
D 1 52 729171 3182.51 910 883 228.8

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