ASTROSAT CZTI

Data Quality Report

Orbit 30769

Creation date: 2024-06-27T20:19:24.796404
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_071T12_9000004446_30769cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30769cztM0_level2_quad_clean.evt
Size (bytes)609,612,48091,857,600
Size581.4 MB 87.6 MB
Events in quadrant A3,438,280594,809
Events in quadrant B5,239,986599,154
Events in quadrant C3,466,987572,634
Events in quadrant D5,862,196546,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145952
B0204392
C0144122
D0220882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6734721.069201%
B6735921.365999%
C67351171.737194%
D67353364.988864%

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 8564 6735 17 17 0.20% 0.25%
B 8565 6735 12 12 0.14% 0.18%
C 8565 6735 17 17 0.20% 0.25%
D 8565 6735 316 316 3.69% 4.69%

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 0 13 231132 1370.43 829 812 168.1
A 13 254 12775 71.18 829 812 168.1
A 3 137 8401 45.16 829 812 168.1
B 6 159 1932335 12103.13 824 800 159.6
B 5 172 26549 161.34 824 800 159.6
B 0 230 21855 131.93 824 800 159.6
C 14 238 128817 685.43 796 802 186.8
C 0 10 118850 632.07 796 802 186.8
C 3 233 93294 495.23 796 802 186.8
D 12 227 1473290 7061.38 788 772 208.5
D 8 195 1191567 5710.39 788 772 208.5
D 13 249 69650 330.3 788 772 208.5

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