ASTROSAT CZTI

Data Quality Report

Orbit 22875

Creation date: 2024-06-27T18:46:56.293037
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/AS1A07_049T01_9000003380_22875cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22875cztM0_level2_quad_clean.evt
Size (bytes)506,678,40097,171,200
Size483.2 MB 92.7 MB
Events in quadrant A3,321,310628,014
Events in quadrant B3,458,006629,523
Events in quadrant C3,333,639602,516
Events in quadrant D4,744,666582,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146921
B0149171
C0146851
D0188403

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7175440.613240%
B7176761.059086%
C7176831.156633%
D71752163.010453%

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 7506 7177 0 0 0.00% 0.00%
B 7507 7178 15 15 0.20% 0.21%
C 7507 7178 0 0 0.00% 0.00%
D 7506 7177 168 168 2.24% 2.34%

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 11917 63.54 860 841 174.3
A 3 137 7471 38.03 860 841 174.3
A 0 226 7403 37.64 860 841 174.3
B 0 228 51149 302.76 851 827 166.2
B 0 189 36020 211.74 851 827 166.2
B 0 190 27672 161.51 851 827 166.2
C 14 238 128356 660.37 819 823 193.1
C 10 91 8254 38.48 819 823 193.1
C 13 61 5689 25.2 819 823 193.1
D 7 238 408689 2031.8 830 808 200.7
D 12 233 367724 1827.74 830 808 200.7
D 1 239 346946 1724.24 830 808 200.7

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