ASTROSAT CZTI

Data Quality Report

Orbit 22535

Creation date: 2024-06-27T18:42:27.800761
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_049T01_9000003344_22535cztM0_level2.evt modeM0/AS1A07_049T01_9000003344_22535cztM0_level2_quad_clean.evt
Size (bytes)429,036,48098,164,800
Size409.2 MB 93.6 MB
Events in quadrant A3,086,240654,617
Events in quadrant B3,268,935658,631
Events in quadrant C3,106,982615,638
Events in quadrant D3,107,170608,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131021
B0136781
C0130771
D0132321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241500.801154%
B6242691.105415%
C6242791.265620%
D6242460.736943%

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 7461 6241 0 0 0.00% 0.00%
B 7462 6242 5 5 0.07% 0.08%
C 7462 6242 8 8 0.11% 0.13%
D 7462 6242 1 1 0.01% 0.02%

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 10812 63.35 799 785 158.3
A 3 1 7624 43.21 799 785 158.3
A 0 226 6971 39.08 799 785 158.3
B 15 33 131732 886.1 791 771 147.8
B 12 111 17176 111.0 791 771 147.8
B 11 111 15145 97.26 791 771 147.8
C 14 238 121387 687.77 758 766 175.4
C 10 22 24744 136.72 758 766 175.4
C 13 61 5219 25.39 758 766 175.4
D 1 52 78877 415.81 777 755 187.9
D 13 172 35970 187.44 777 755 187.9
D 2 234 23263 119.8 777 755 187.9

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