ASTROSAT CZTI

Data Quality Report

Orbit 24575

Creation date: 2024-06-27T19:07:27.046666
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/AS1T03_183T01_9000003610_24575cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24575cztM0_level2_quad_clean.evt
Size (bytes)481,089,600100,350,720
Size458.8 MB 95.7 MB
Events in quadrant A3,134,648666,054
Events in quadrant B3,230,505674,038
Events in quadrant C3,500,099637,933
Events in quadrant D4,281,201625,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134151
B0136201
C0143591
D0172581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242781.249599%
B6243931.489668%
C62431482.370655%
D6243841.345507%

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 7357 6242 0 0 0.00% 0.00%
B 7358 6243 16 16 0.22% 0.26%
C 7358 6243 25 25 0.34% 0.40%
D 7358 6243 14 14 0.19% 0.22%

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 9860 56.21 813 795 161.3
A 0 226 7149 39.4 813 795 161.3
A 3 137 7011 38.54 813 795 161.3
B 3 64 66601 439.23 801 780 149.9
B 12 111 17703 112.93 801 780 149.9
B 11 111 15710 99.63 801 780 149.9
C 10 9 209577 1182.8 771 776 176.5
C 14 238 126965 714.83 771 776 176.5
C 7 247 79253 444.55 771 776 176.5
D 8 195 950036 5106.52 786 764 185.9
D 12 218 217750 1167.26 786 764 185.9
D 7 238 61766 328.15 786 764 185.9

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