ASTROSAT CZTI

Data Quality Report

Orbit 17846

Creation date: 2024-06-27T17:41:36.715786
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_9000002658_17846cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17846cztM0_level2_quad_clean.evt
Size (bytes)330,851,52057,637,440
Size315.5 MB 55.0 MB
Events in quadrant A2,212,323369,910
Events in quadrant B2,307,205377,886
Events in quadrant C2,246,092355,435
Events in quadrant D2,947,488325,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095221
B096721
C094932
D0118781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4498611.356158%
B4498731.622944%
C4497741.645541%
D44972746.092951%

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 5813 4499 0 0 0.00% 0.00%
B 5813 4499 2 2 0.03% 0.04%
C 5812 4498 0 0 0.00% 0.00%
D 5811 4497 225 225 3.87% 5.00%

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 15 174 15338 128.6 569 559 114.9
A 5 98 7284 58.52 569 559 114.9
A 0 226 4928 38.02 569 559 114.9
B 0 219 21506 190.15 576 563 110.1
B 0 197 17909 157.49 576 563 110.1
B 12 111 12622 109.49 576 563 110.1
C 14 238 86735 672.78 550 555 128.1
C 5 218 8007 58.18 550 555 128.1
C 8 208 4479 30.63 550 555 128.1
D 7 238 830593 6089.13 533 519 136.3
D 1 52 44094 319.65 533 519 136.3
D 10 70 28160 202.76 533 519 136.3

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