ASTROSAT CZTI

Data Quality Report

Orbit 18415

Creation date: 2024-06-27T17:49:32.973863
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/AS1A05_199T01_9000002732_18415cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18415cztM0_level2_quad_clean.evt
Size (bytes)495,385,92098,092,800
Size472.4 MB 93.5 MB
Events in quadrant A3,682,675614,851
Events in quadrant B3,570,460631,126
Events in quadrant C3,533,566608,216
Events in quadrant D3,705,797593,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158392
B0154822
C0154102
D0161013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75061652.198241%
B75061572.091660%
C75061421.891820%
D75051411.878748%

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 7881 7507 13 13 0.16% 0.17%
B 7881 7507 0 0 0.00% 0.00%
C 7881 7507 0 0 0.00% 0.00%
D 7880 7506 40 40 0.51% 0.53%

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 15 174 205105 1128.57 898 877 181.0
A 4 2 23603 125.58 898 877 181.0
A 0 226 7878 38.69 898 877 181.0
B 0 189 30993 173.78 898 874 173.3
B 12 111 20842 115.21 898 874 173.3
B 11 111 17789 97.59 898 874 173.3
C 14 238 132852 654.34 858 862 201.7
C 3 233 53616 261.53 858 862 201.7
C 13 61 6104 25.99 858 862 201.7
D 1 52 130547 615.79 867 840 210.6
D 7 238 108064 509.05 867 840 210.6
D 8 230 58116 271.92 867 840 210.6

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