ASTROSAT CZTI

Data Quality Report

Orbit 00882

Creation date: 2024-06-27T14:04:13.980750
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/AS1P01_889T01_9000000154_00882cztM0_level2.evt modeM0/AS1P01_889T01_9000000154_00882cztM0_level2_quad_clean.evt
Size (bytes)299,600,64033,200,640
Size285.7 MB 31.7 MB
Events in quadrant A2,109,290217,831
Events in quadrant B2,654,089212,521
Events in quadrant C2,162,649214,371
Events in quadrant D2,008,382211,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077410
B093420
C079140
D074670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204500.000000%
B2045683.325183%
C204560.293399%
D204530.146699%

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 2045 2045 8 8 0.39% 0.39%
B 2045 2045 200 200 9.78% 9.78%
C 2045 2045 48 48 2.35% 2.35%
D 2044 2044 18 18 0.88% 0.88%

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 14 170 6255 42.95 546 552 132.8
A 14 79 4321 28.38 546 552 132.8
A 15 17 3436 21.72 546 552 132.8
B 8 38 461014 3496.58 563 568 131.7
B 15 22 11719 84.68 563 568 131.7
B 4 200 9691 69.28 563 568 131.7
C 8 208 209552 1541.77 492 508 135.6
C 3 111 9213 64.2 492 508 135.6
C 3 79 8824 61.33 492 508 135.6
D 11 131 76768 521.87 476 490 146.2
D 13 170 54195 367.43 476 490 146.2
D 2 16 36532 246.59 476 490 146.2

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