ASTROSAT CZTI

Data Quality Report

Orbit 15560

Creation date: 2024-06-27T17:10:40.452110
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/AS1T02_083T01_9000002304_15560cztM0_level2.evt modeM0/AS1T02_083T01_9000002304_15560cztM0_level2_quad_clean.evt
Size (bytes)481,685,760102,974,400
Size459.4 MB 98.2 MB
Events in quadrant A3,363,818683,262
Events in quadrant B3,560,496688,149
Events in quadrant C3,536,004663,435
Events in quadrant D3,705,180649,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138023
B0144552
C0144892
D0148412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62241151.847686%
B62241302.088689%
C62242283.663239%
D62242403.856041%

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 7555 6225 2 2 0.03% 0.03%
B 7555 6225 2 2 0.03% 0.03%
C 7555 6225 20 20 0.26% 0.32%
D 7555 6225 132 132 1.75% 2.12%

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 15 222 10645 57.04 867 851 171.7
A 13 248 8641 45.37 867 851 171.7
A 0 253 8353 43.69 867 851 171.7
B 0 189 92781 581.64 855 838 158.1
B 3 64 50146 311.93 855 838 158.1
B 4 48 18891 114.21 855 838 158.1
C 14 238 137059 726.57 825 832 187.5
C 3 233 126341 669.41 825 832 187.5
C 10 22 31983 166.15 825 832 187.5
D 1 52 346106 1586.26 835 818 217.7
D 12 110 69032 313.38 835 818 217.7
D 7 38 39218 176.41 835 818 217.7

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