ASTROSAT CZTI

Data Quality Report

Orbit 21166

Creation date: 2024-06-27T18:24:23.517083
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/AS1C04_001T01_9000003126_21166cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21166cztM0_level2_quad_clean.evt
Size (bytes)570,525,120148,950,720
Size544.1 MB 142.1 MB
Events in quadrant A4,034,088993,302
Events in quadrant B3,984,8801,017,799
Events in quadrant C3,778,842987,643
Events in quadrant D4,933,559952,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176182
B0172292
C0166942
D0204292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80542583.203377%
B80552332.892613%
C80551732.147734%
D80552753.414029%

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 8684 8057 81 81 0.93% 1.01%
B 8685 8058 7 7 0.08% 0.09%
C 8685 8058 0 0 0.00% 0.00%
D 8685 8058 135 135 1.55% 1.68%

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 5 16 405311 2113.7 939 917 191.3
A 13 254 12332 59.66 939 917 191.3
A 0 226 7993 36.99 939 917 191.3
B 0 189 49194 268.43 952 927 179.8
B 0 229 41963 228.22 952 927 179.8
B 0 228 39148 212.56 952 927 179.8
C 14 238 143645 659.98 919 924 216.3
C 3 233 39741 179.5 919 924 216.3
C 13 61 6392 25.29 919 924 216.3
D 1 52 502868 2257.63 914 884 222.4
D 1 20 496432 2228.68 914 884 222.4
D 7 238 147633 659.99 914 884 222.4

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