ASTROSAT CZTI

Data Quality Report

Orbit 27475

Creation date: 2024-06-27T19:40:26.945470
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_249T01_9000003934_27475cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27475cztM0_level2_quad_clean.evt
Size (bytes)539,193,60096,071,040
Size514.2 MB 91.6 MB
Events in quadrant A3,270,938626,888
Events in quadrant B3,303,867633,889
Events in quadrant C3,330,966599,720
Events in quadrant D5,979,630592,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134890
B0136300
C0137000
D0219370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6539460.703471%
B6540590.902141%
C6540580.886850%
D6540113217.308869%

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 7634 6540 0 0 0.00% 0.00%
B 7635 6541 0 0 0.00% 0.00%
C 7635 6541 1 1 0.01% 0.02%
D 7635 6541 1058 1058 13.86% 16.17%

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 10994 60.29 847 831 168.6
A 3 137 7612 40.23 847 831 168.6
A 0 226 7390 38.91 847 831 168.6
B 12 111 19160 115.49 836 816 158.8
B 11 111 17380 104.29 836 816 158.8
B 14 111 15894 94.93 836 816 158.8
C 14 238 131364 692.93 803 807 188.4
C 10 22 33112 171.46 803 807 188.4
C 2 16 32533 168.38 803 807 188.4
D 1 52 3011302 16691.46 756 736 180.4
D 2 250 42153 229.63 756 736 180.4
D 2 234 23967 128.8 756 736 180.4

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