ASTROSAT CZTI

Data Quality Report

Orbit 35780

Creation date: 2022-05-11T15:17:23.161462
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/AS1A09_121T01_9000005136_35780cztM0_level2.evt modeM0/AS1A09_121T01_9000005136_35780cztM0_level2_quad_clean.evt
Size (bytes)459,187,20088,758,720
Size437.9 MB 84.6 MB
Events in quadrant A2,812,370593,227
Events in quadrant B3,594,887588,843
Events in quadrant C2,855,141581,063
Events in quadrant D4,277,220546,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117983
B0140672
C0115882
D0162152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5407100.184945%
B54072494.605141%
C5407370.684298%
D54072274.198262%

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 7169 5408 0 0 0.00% 0.00%
B 7169 5408 181 181 2.52% 3.35%
C 7169 5408 37 37 0.52% 0.68%
D 7169 5408 228 228 3.18% 4.22%

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 164832 1230.45 661 649 133.4
A 7 48 87554 651.3 661 649 133.4
A 13 6 7285 49.73 661 649 133.4
B 5 172 419631 3435.27 638 622 122.0
B 0 229 220125 1799.61 638 622 122.0
B 5 255 211141 1725.95 638 622 122.0
C 15 214 232433 1577.91 632 638 146.9
C 0 10 117277 794.01 632 638 146.9
C 15 159 11791 75.92 632 638 146.9
D 14 52 851008 5416.04 637 620 157.0
D 2 249 221910 1409.38 637 620 157.0
D 10 118 215041 1365.63 637 620 157.0

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