ASTROSAT CZTI

Data Quality Report

Orbit 29491

Creation date: 2024-06-27T20:04:40.049716
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_064T03_9000004246_29491cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29491cztM0_level2_quad_clean.evt
Size (bytes)822,481,920102,009,600
Size784.4 MB 97.3 MB
Events in quadrant A3,321,623696,378
Events in quadrant B3,387,595706,309
Events in quadrant C3,544,047677,712
Events in quadrant D14,177,485515,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145281
B0146391
C0148121
D0469216

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70641321.868630%
B70641562.208381%
C70642253.185164%
D7063435961.715985%

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 7274 7065 1 1 0.01% 0.01%
B 7274 7065 0 0 0.00% 0.00%
C 7274 7065 4 4 0.05% 0.06%
D 7273 7064 3932 3932 54.06% 55.66%

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 14094 76.18 855 834 174.1
A 15 174 10834 57.45 855 834 174.1
A 3 137 8368 43.28 855 834 174.1
B 0 190 20157 118.97 844 821 162.5
B 12 111 19574 115.39 844 821 162.5
B 5 255 19488 114.86 844 821 162.5
C 14 238 155872 808.54 815 818 191.8
C 3 233 118469 613.5 815 818 191.8
C 7 247 45116 231.0 815 818 191.8
D 8 195 7078456 45035.98 664 645 157.2
D 1 52 2273047 14459.25 664 645 157.2
D 12 33 1897257 12068.11 664 645 157.2

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