ASTROSAT CZTI

Data Quality Report

Orbit 35799

Creation date: 2022-05-13T16:38:41.373485
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/AS1A09_029T10_9000005140_35799cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35799cztM0_level2_quad_clean.evt
Size (bytes)396,720,00071,625,600
Size378.3 MB 68.3 MB
Events in quadrant A2,575,857469,341
Events in quadrant B3,187,031463,615
Events in quadrant C2,993,906438,767
Events in quadrant D2,910,049438,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108923
B0127492
C0121422
D0119732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5107100.195810%
B51071222.388878%
C51071522.976307%
D5107841.644801%

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 7229 5108 3 3 0.04% 0.06%
B 7229 5108 94 94 1.30% 1.84%
C 7229 5108 125 125 1.73% 2.45%
D 7229 5108 93 93 1.29% 1.82%

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 159694 1312.05 606 596 121.3
A 7 3 44249 360.0 606 596 121.3
A 13 6 15514 123.03 606 596 121.3
B 5 172 273513 2410.58 595 582 113.2
B 5 255 163689 1440.59 595 582 113.2
B 0 213 161693 1422.96 595 582 113.2
C 0 10 401238 3101.71 561 565 129.2
C 15 214 213725 1650.12 561 565 129.2
C 9 187 100531 773.86 561 565 129.2
D 13 249 250350 1773.35 576 559 140.9
D 8 195 114521 809.05 576 559 140.9
D 10 199 89393 630.66 576 559 140.9

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