ASTROSAT CZTI

Data Quality Report

Orbit 21331

Creation date: 2024-06-27T18:26:29.241606
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/AS1A05_108T01_9000003146_21331cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21331cztM0_level2_quad_clean.evt
Size (bytes)478,411,20071,902,080
Size456.2 MB 68.6 MB
Events in quadrant A3,189,375435,372
Events in quadrant B3,253,383443,694
Events in quadrant C3,207,458428,819
Events in quadrant D4,400,165418,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135141
B0137081
C0135551
D0174371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6455390.604183%
B6455430.666150%
C6456731.130731%
D6456831.285626%

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 7515 6455 0 0 0.00% 0.00%
B 7515 6455 4 4 0.05% 0.06%
C 7516 6456 0 0 0.00% 0.00%
D 7516 6456 41 41 0.55% 0.64%

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 5 168 45818 280.95 803 787 160.3
A 15 236 25329 153.12 803 787 160.3
A 11 47 18800 112.38 803 787 160.3
B 0 230 61291 399.99 801 780 151.3
B 3 64 22482 143.46 801 780 151.3
B 4 173 21805 138.98 801 780 151.3
C 14 238 122947 674.41 781 788 181.1
C 7 220 34351 185.29 781 788 181.1
C 13 61 5492 25.97 781 788 181.1
D 13 174 1109293 5884.19 786 765 188.4
D 1 52 139083 734.21 786 765 188.4
D 1 20 113575 598.81 786 765 188.4

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