ASTROSAT CZTI

Data Quality Report

Orbit 07950

Creation date: 2024-06-27T15:25:55.379513
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/AS1G06_117T01_9000001086_07950cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07950cztM0_level2_quad_clean.evt
Size (bytes)524,917,44098,346,240
Size500.6 MB 93.8 MB
Events in quadrant A3,566,342604,737
Events in quadrant B3,790,479621,186
Events in quadrant C3,538,925624,720
Events in quadrant D4,475,156588,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01618143
B01665142
C01615834
D01897265

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77493424.413473%
B77513544.567153%
C77532172.798917%
D77483584.620547%

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 7784 7767 1 1 0.01% 0.01%
B 7784 7769 8 8 0.10% 0.10%
C 7784 7769 0 0 0.00% 0.00%
D 7784 7765 117 117 1.50% 1.51%

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 15 10439 50.36 918 892 189.6
A 13 253 9532 45.58 918 892 189.6
A 13 251 8912 42.31 918 892 189.6
B 10 16 133093 739.22 925 900 178.8
B 10 245 28177 152.53 925 900 178.8
B 12 111 20451 109.33 925 900 178.8
C 14 67 10048 43.13 904 904 212.0
C 13 61 6835 27.97 904 904 212.0
C 8 222 3138 10.54 904 904 212.0
D 1 52 940200 4298.72 896 867 218.5
D 5 81 43031 192.96 896 867 218.5
D 12 233 33935 151.33 896 867 218.5

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