ASTROSAT CZTI

Data Quality Report

Orbit 36756

Creation date: 2024-06-27T21:31:15.242414
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/AS1A11_101T01_9000005238_36756cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36756cztM0_level2_quad_clean.evt
Size (bytes)381,859,20033,840,000
Size364.2 MB 32.3 MB
Events in quadrant A1,972,973248,657
Events in quadrant B5,226,1768,030
Events in quadrant C2,033,643243,765
Events in quadrant D2,051,319234,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098851452
B0261948015
C0103031749
D0105081532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010111
B09711
C010113
D010013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182
B0172
C0182
D0181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A416430.072046%
B3842381299.219157%
C413260.145208%
D4131180.435730%

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 6759 4377 0 0 0.00% 0.00%
B 6630 3858 1076 1076 16.23% 27.89%
C 6758 4333 4 4 0.06% 0.09%
D 6760 4359 13 13 0.19% 0.30%

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 10 83 115490 1159.67 480 470 99.2
A 13 254 6834 64.16 480 470 99.2
A 3 137 4961 45.28 480 470 99.2
B 12 1 5133199 1003473.08 17 17 5.1
B 12 2 10571 2063.18 17 17 5.1
B 12 144 6436 1254.83 17 17 5.1
C 15 214 171173 1585.35 457 458 107.7
C 14 254 55166 508.05 457 458 107.7
C 0 10 21106 191.75 457 458 107.7
D 2 249 91035 798.58 461 448 113.4
D 13 249 86186 755.83 461 448 113.4
D 13 171 39490 344.18 461 448 113.4

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