ASTROSAT CZTI

Data Quality Report

Orbit 08921

Creation date: 2024-06-27T15:39:01.070224
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_092T01_9000001240_08921cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08921cztM0_level2_quad_clean.evt
Size (bytes)511,836,480106,462,080
Size488.1 MB 101.5 MB
Events in quadrant A4,231,911681,128
Events in quadrant B3,704,656689,507
Events in quadrant C3,365,166668,533
Events in quadrant D3,683,860657,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176326
B0161715
C0156186
D0163443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75891351.778890%
B7589740.975096%
C7589410.540256%
D7590290.382082%

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 8210 7594 46 46 0.56% 0.61%
B 8210 7593 3 3 0.04% 0.04%
C 8210 7594 0 0 0.00% 0.00%
D 8210 7594 9 9 0.11% 0.12%

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 600614 3286.28 892 871 182.5
A 15 174 116610 634.19 892 871 182.5
A 5 16 76870 416.43 892 871 182.5
B 10 16 65518 375.41 896 873 172.2
B 0 214 54613 312.08 896 873 172.2
B 0 168 29095 163.89 896 873 172.2
C 9 68 15719 74.69 856 860 198.9
C 13 61 6544 28.57 856 860 198.9
C 8 128 4086 16.22 856 860 198.9
D 13 105 156404 677.34 854 834 229.7
D 8 195 121054 523.43 854 834 229.7
D 1 52 51946 222.54 854 834 229.7

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