ASTROSAT CZTI

Data Quality Report

Orbit 11718

Creation date: 2024-06-27T16:17:20.806222
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/AS1G08_075T01_9000001726_11718cztM0_level2.evt modeM0/AS1G08_075T01_9000001726_11718cztM0_level2_quad_clean.evt
Size (bytes)537,603,84078,131,520
Size512.7 MB 74.5 MB
Events in quadrant A4,577,041479,605
Events in quadrant B3,980,032479,697
Events in quadrant C3,044,482480,971
Events in quadrant D4,220,895453,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182822
B0162551
C0136991
D0173601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67721131.668636%
B67722453.617838%
C6772330.487301%
D67723174.681040%

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 7648 6774 32 32 0.42% 0.47%
B 7648 6774 125 125 1.63% 1.85%
C 7648 6774 0 0 0.00% 0.00%
D 7648 6774 233 233 3.05% 3.44%

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 1217484 7499.33 795 777 162.2
A 1 162 112273 687.22 795 777 162.2
A 1 178 58249 354.24 795 777 162.2
B 4 239 578199 3800.2 788 769 151.9
B 3 64 117085 765.5 788 769 151.9
B 10 245 73949 481.61 788 769 151.9
C 14 234 5884 28.07 779 781 181.8
C 13 61 5596 26.48 779 781 181.8
C 12 4 2500 9.46 779 781 181.8
D 1 52 847236 4561.99 762 740 185.6
D 7 80 240611 1292.73 762 740 185.6
D 13 104 61780 328.96 762 740 185.6

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