ASTROSAT CZTI

Data Quality Report

Orbit 42056

Creation date: 2024-06-27T22:36:17.269789
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_42056cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42056cztM0_level2_quad_clean.evt
Size (bytes)329,028,48085,066,560
Size313.8 MB 81.1 MB
Events in quadrant A3,681,488574,831
Events in quadrant B2,371,280601,600
Events in quadrant C2,401,906561,889
Events in quadrant D3,331,759483,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145372
B0103342
C0101442
D0133712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5046791.565597%
B5046180.356718%
C504530.059465%
D50453817.552032%

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 7138 5047 43 43 0.60% 0.85%
B 7138 5047 11 11 0.15% 0.22%
C 7137 5046 0 0 0.00% 0.00%
D 7137 5046 297 297 4.16% 5.89%

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 866385 7275.21 577 566 119.0
A 10 83 551324 4627.85 577 566 119.0
A 15 222 16936 137.55 577 566 119.0
B 3 112 33425 294.97 575 560 111.4
B 5 255 32205 284.02 575 560 111.4
B 0 229 22335 195.43 575 560 111.4
C 15 214 212155 1607.08 559 562 131.7
C 12 249 7372 51.72 559 562 131.7
C 13 61 3645 23.42 559 562 131.7
D 1 52 746240 5695.0 533 517 130.9
D 13 249 232499 1771.62 533 517 130.9
D 12 6 208630 1589.33 533 517 130.9

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