ASTROSAT CZTI

Data Quality Report

Orbit 16275

Creation date: 2024-06-27T17:20:14.371068
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_072T05_9000002394_16275cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16275cztM0_level2_quad_clean.evt
Size (bytes)540,581,760107,040,960
Size515.5 MB 102.1 MB
Events in quadrant A3,668,714678,980
Events in quadrant B4,083,176690,161
Events in quadrant C3,687,603680,421
Events in quadrant D4,414,971662,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160453
B0170822
C0160472
D0183502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7619881.155007%
B7619891.168132%
C76191121.470009%
D76201101.443570%

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 8015 7621 34 34 0.42% 0.45%
B 8015 7621 0 0 0.00% 0.00%
C 8015 7621 2 2 0.02% 0.03%
D 8016 7622 73 73 0.91% 0.96%

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 105345 552.44 922 902 189.1
A 13 248 19047 95.98 922 902 189.1
A 0 226 8119 38.17 922 902 189.1
B 0 219 141257 785.22 922 898 178.8
B 0 198 56069 308.65 922 898 178.8
B 4 216 55076 303.09 922 898 178.8
C 14 238 136736 653.62 883 887 207.8
C 3 233 61105 289.73 883 887 207.8
C 0 207 49009 231.53 883 887 207.8
D 1 52 698009 3192.46 894 866 218.4
D 15 0 215316 982.04 894 866 218.4
D 10 70 123629 562.17 894 866 218.4

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