ASTROSAT CZTI

Data Quality Report

Orbit 34575

Creation date: 2022-02-23T10:08:19.167449
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_085T01_9000004910_34575cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34575cztM0_level2_quad_clean.evt
Size (bytes)826,943,040124,940,160
Size788.6 MB 119.2 MB
Events in quadrant A4,613,615810,511
Events in quadrant B4,990,627805,731
Events in quadrant C4,518,574819,279
Events in quadrant D10,314,528724,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022332
B022638
C023445
D022240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379
B03911
C03810
D0379

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238184019
B0278657235
C0230464167
D0447537663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90572272.506349%
B89341862.081934%
C9071280.308676%
D880391310.371464%

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 16093 9464 136 136 0.85% 1.44%
B 13357 9275 114 114 0.85% 1.23%
C 16216 9482 12 12 0.07% 0.13%
D 16130 9186 548 548 3.40% 5.97%

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 15 223 473495 2258.63 1046 1027 209.2
A 10 83 47817 223.68 1046 1027 209.2
A 13 6 28691 132.25 1046 1027 209.2
B 5 172 561100 2805.8 1037 1008 199.6
B 0 229 148697 739.85 1037 1008 199.6
B 0 190 46674 228.77 1037 1008 199.6
C 15 214 379125 1578.43 1030 1037 239.5
C 0 10 74524 306.79 1030 1037 239.5
C 14 67 29058 116.98 1030 1037 239.5
D 8 195 5626051 23363.83 977 949 240.8
D 1 47 337412 1397.5 977 949 240.8
D 13 249 153800 634.87 977 949 240.8

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