ASTROSAT CZTI

Data Quality Report

Orbit 35294

Creation date: 2022-04-08T20:23:07.278401
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/AS1A11_082T01_9000005056_35294cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35294cztM0_level2_quad_clean.evt
Size (bytes)714,263,04054,780,480
Size681.2 MB 52.2 MB
Events in quadrant A2,616,216351,174
Events in quadrant B10,554,278256,218
Events in quadrant C3,212,333345,181
Events in quadrant D4,871,364315,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113893
B0351902
C0127652
D0181812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557290.161522%
B5572365965.667624%
C55721482.656138%
D557263211.342426%

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 7335 5573 0 0 0.00% 0.00%
B 7335 5572 3142 3142 42.84% 56.39%
C 7335 5573 132 132 1.80% 2.37%
D 7335 5573 605 605 8.25% 10.86%

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 100939 773.52 644 632 129.7
A 13 6 11525 84.0 644 632 129.7
A 13 254 9627 69.37 644 632 129.7
B 5 172 6001249 71984.88 435 423 83.4
B 5 236 2770570 33230.21 435 423 83.4
B 4 232 52879 629.25 435 423 83.4
C 0 10 484557 3377.74 619 625 143.3
C 15 214 228081 1587.59 619 625 143.3
C 15 159 30684 209.81 619 625 143.3
D 2 249 690713 4731.02 596 579 145.9
D 7 80 565329 3871.49 596 579 145.9
D 14 52 383077 2622.11 596 579 145.9

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