ASTROSAT CZTI

Data Quality Report

Orbit 19916

Creation date: 2024-06-27T18:08:44.067695
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_064T01_9000002964_19916cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19916cztM0_level2_quad_clean.evt
Size (bytes)731,442,240100,817,280
Size697.6 MB 96.1 MB
Events in quadrant A2,846,649733,907
Events in quadrant B4,898,632721,839
Events in quadrant C4,055,033715,528
Events in quadrant D9,961,211476,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121640
B0187050
C0160030
D0335171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5776430.744460%
B57771522.631123%
C57772874.967976%
D5776315054.536011%

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 7071 5776 0 0 0.00% 0.00%
B 7072 5778 55 55 0.78% 0.95%
C 7072 5777 125 125 1.77% 2.16%
D 7070 5775 3056 3056 43.22% 52.92%

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 3 1 10702 68.47 732 716 145.9
A 14 238 10320 65.85 732 716 145.9
A 5 16 8243 51.61 732 716 145.9
B 3 112 1604785 12134.95 726 710 132.2
B 7 220 166913 1257.34 726 710 132.2
B 0 197 70070 524.71 726 710 132.2
C 9 221 817185 5005.87 711 717 163.1
C 4 254 257967 1577.23 711 717 163.1
C 14 238 112107 682.95 711 717 163.1
D 7 38 5062358 37555.39 555 539 134.8
D 2 184 1304654 9675.68 555 539 134.8
D 12 218 897198 6652.62 555 539 134.8

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