ASTROSAT CZTI

Data Quality Report

Orbit 42067

Creation date: 2024-06-27T22:36:26.238381
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_037T03_9000005738_42067cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42067cztM0_level2_quad_clean.evt
Size (bytes)345,012,48085,121,280
Size329.0 MB 81.2 MB
Events in quadrant A4,641,511532,945
Events in quadrant B2,334,169605,363
Events in quadrant C2,395,479572,094
Events in quadrant D3,006,044512,458

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170822
B0102852
C0101633
D0124112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505657611.392405%
B505690.178006%
C505530.059347%
D50551372.710188%

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 7030 5057 324 324 4.61% 6.41%
B 7030 5057 7 7 0.10% 0.14%
C 7029 5056 0 0 0.00% 0.00%
D 7029 5056 114 114 1.62% 2.25%

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 1781567 15826.36 552 543 112.5
A 10 83 505024 4482.87 552 543 112.5
A 15 222 177966 1576.59 552 543 112.5
B 3 112 59558 532.17 574 558 110.9
B 12 111 13828 119.69 574 558 110.9
B 11 111 12656 109.12 574 558 110.9
C 15 214 208911 1575.41 560 564 132.2
C 13 61 3651 23.34 560 564 132.2
C 12 249 3388 21.35 560 564 132.2
D 12 6 227643 1661.75 548 531 136.7
D 13 249 200879 1465.92 548 531 136.7
D 1 52 183984 1342.3 548 531 136.7

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