ASTROSAT CZTI

Data Quality Report

Orbit 35680

Creation date: 2022-09-12T16:58:18.827974
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_029T03_9000005108_35680cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35680cztM0_level2_quad_clean.evt
Size (bytes)436,993,92075,767,040
Size416.7 MB 72.3 MB
Events in quadrant A2,593,180503,355
Events in quadrant B4,403,522489,691
Events in quadrant C3,066,284471,994
Events in quadrant D2,820,770467,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108782
B0164501
C0122591
D0118831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516460.116189%
B516456010.844307%
C51641172.265686%
D5164741.432998%

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 7106 5165 0 0 0.00% 0.00%
B 7106 5164 413 413 5.81% 8.00%
C 7106 5165 106 106 1.49% 2.05%
D 7106 5165 60 60 0.84% 1.16%

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 116601 926.4 621 610 125.2
A 15 169 66172 523.63 621 610 125.2
A 13 6 7151 52.24 621 610 125.2
B 5 172 1281918 11516.34 584 571 111.3
B 5 255 349032 3131.86 584 571 111.3
B 5 31 252700 2266.06 584 571 111.3
C 0 10 314633 2362.19 576 580 132.9
C 4 254 214845 1611.62 576 580 132.9
C 15 214 212459 1593.68 576 580 132.9
D 13 249 127823 882.33 590 573 144.2
D 2 153 122911 848.27 590 573 144.2
D 10 118 96741 666.82 590 573 144.2

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