ASTROSAT CZTI

Data Quality Report

Orbit 40128

Creation date: 2024-06-27T22:12:39.333014
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/AS1A12_004T01_9000005520_40128cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40128cztM0_level2_quad_clean.evt
Size (bytes)527,780,16079,225,920
Size503.3 MB 75.6 MB
Events in quadrant A2,574,768586,919
Events in quadrant B2,325,793614,622
Events in quadrant C6,994,602458,854
Events in quadrant D7,260,717394,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107173
B0102332
C0241632
D0249442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490490.183524%
B4904250.509788%
C4904133927.304241%
D4904152331.056281%

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 7027 4905 2 2 0.03% 0.04%
B 7027 4905 16 16 0.23% 0.33%
C 7027 4905 1333 1333 18.97% 27.18%
D 7026 4904 1640 1640 23.34% 33.44%

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 427995 3852.5 545 534 111.0
A 12 189 37362 331.91 545 534 111.0
A 3 137 5855 47.95 545 534 111.0
B 5 255 117008 1107.95 552 537 105.1
B 4 171 23046 214.12 552 537 105.1
B 0 230 20176 186.82 552 537 105.1
C 9 187 4795790 42356.28 485 488 113.2
C 15 214 186017 1638.75 485 488 113.2
C 0 10 86026 755.55 485 488 113.2
D 12 227 5092827 44216.95 466 454 115.2
D 2 249 128829 1114.68 466 454 115.2
D 13 249 94826 819.43 466 454 115.2

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