ASTROSAT CZTI

Data Quality Report

Orbit 28394

Creation date: 2024-06-27T19:51:17.200488
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/AS1A10_045T05_9000004086_28394cztM0_level2.evt modeM0/AS1A10_045T05_9000004086_28394cztM0_level2_quad_clean.evt
Size (bytes)509,143,68070,752,960
Size485.6 MB 67.5 MB
Events in quadrant A2,929,490437,972
Events in quadrant B2,942,535448,110
Events in quadrant C2,931,178430,595
Events in quadrant D6,202,675399,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125080
B0124130
C0124440
D0225840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6102480.786627%
B6102450.737463%
C6102661.081613%
D610269811.438873%

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 6947 6102 3 3 0.04% 0.05%
B 6947 6102 0 0 0.00% 0.00%
C 6947 6102 0 0 0.00% 0.00%
D 6946 6101 569 569 8.19% 9.33%

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 12 96 22796 145.03 747 731 152.1
A 13 6 13564 84.35 747 731 152.1
A 13 254 10065 61.35 747 731 152.1
B 0 230 20779 139.9 740 720 143.4
B 12 111 17691 118.36 740 720 143.4
B 10 245 16531 110.27 740 720 143.4
C 14 238 115861 675.93 719 722 170.3
C 7 220 13264 73.63 719 722 170.3
C 13 61 4928 24.69 719 722 170.3
D 1 52 2854724 17101.76 699 678 166.9
D 8 195 609106 3645.77 699 678 166.9
D 2 250 67726 401.76 699 678 166.9

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