ASTROSAT CZTI

Data Quality Report

Orbit 23048

Creation date: 2024-06-27T18:49:49.804378
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/AS1A07_054T01_9000003406_23048cztM0_level2.evt modeM0/AS1A07_054T01_9000003406_23048cztM0_level2_quad_clean.evt
Size (bytes)479,946,240116,205,120
Size457.7 MB 110.8 MB
Events in quadrant A3,242,476764,850
Events in quadrant B3,403,200781,349
Events in quadrant C3,309,878746,870
Events in quadrant D4,095,204730,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146051
B0148871
C0146341
D0172441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71261842.582094%
B71272122.974604%
C71271882.637856%
D71271572.202890%

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 7176 7127 0 0 0.00% 0.00%
B 7177 7128 8 8 0.11% 0.11%
C 7177 7128 0 0 0.00% 0.00%
D 7177 7128 42 42 0.59% 0.59%

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 2 79 17868 101.24 833 813 168.5
A 13 254 9927 54.1 833 813 168.5
A 3 137 7532 39.89 833 813 168.5
B 0 190 35017 216.55 833 813 157.9
B 3 64 29607 182.3 833 813 157.9
B 4 216 22988 140.4 833 813 157.9
C 14 238 128545 685.01 797 800 186.5
C 3 233 48642 256.55 797 800 186.5
C 0 10 13706 69.21 797 800 186.5
D 1 52 468465 2387.49 807 781 195.9
D 13 174 275143 1400.6 807 781 195.9
D 13 153 149490 759.15 807 781 195.9

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