ASTROSAT CZTI

Data Quality Report

Orbit 10845

Creation date: 2024-06-27T16:04:28.378916
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/AS1A03_086T01_9000001568_10845cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10845cztM0_level2_quad_clean.evt
Size (bytes)636,321,60095,662,080
Size606.8 MB 91.2 MB
Events in quadrant A6,158,862570,639
Events in quadrant B4,916,986616,388
Events in quadrant C3,568,016626,146
Events in quadrant D4,150,952593,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300115
B01922317
C0153108
D01723121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A702684512.026758%
B70235848.315535%
C7026981.394819%
D70243394.826310%

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 7254 7029 605 605 8.34% 8.61%
B 7254 7030 262 262 3.61% 3.73%
C 7254 7030 31 31 0.43% 0.44%
D 7254 7030 218 218 3.01% 3.10%

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 8 5 2528281 15228.1 809 794 166.0
A 13 251 204559 1227.68 809 794 166.0
A 15 223 176976 1061.5 809 794 166.0
B 4 239 1545671 9518.22 843 825 162.3
B 0 219 31638 189.85 843 825 162.3
B 0 214 30789 184.62 843 825 162.3
C 4 254 175114 894.15 835 843 194.9
C 15 48 120517 614.03 835 843 194.9
C 14 234 7114 32.18 835 843 194.9
D 13 105 479624 2418.11 813 791 198.0
D 13 104 133905 672.23 813 791 198.0
D 12 233 94095 471.19 813 791 198.0

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