ASTROSAT CZTI

Data Quality Report

Orbit 42600

Creation date: 2024-06-27T22:42:03.143360
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_061T07_9000005818_42600cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42600cztM0_level2_quad_clean.evt
Size (bytes)309,127,68090,002,880
Size294.8 MB 85.8 MB
Events in quadrant A2,887,689602,692
Events in quadrant B2,493,055616,018
Events in quadrant C2,836,040585,840
Events in quadrant D2,801,695539,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119212
B0112572
C0117432
D0122532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5445150.275482%
B5445380.697888%
C5445130.238751%
D5445400.734619%

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 7148 5446 3 3 0.04% 0.06%
B 7148 5446 18 18 0.25% 0.33%
C 7148 5446 5 5 0.07% 0.09%
D 7148 5446 29 29 0.41% 0.53%

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 556823 4484.48 599 587 124.0
A 13 6 8340 62.51 599 587 124.0
A 3 137 6711 49.37 599 587 124.0
B 5 255 81865 699.35 596 580 116.2
B 0 245 36554 309.51 596 580 116.2
B 4 141 15928 132.05 596 580 116.2
C 15 214 241941 1765.24 587 592 136.7
C 7 220 175142 1276.67 587 592 136.7
C 9 54 57256 414.44 587 592 136.7
D 1 52 337718 2324.03 585 567 145.1
D 13 249 76583 523.99 585 567 145.1
D 1 47 34038 230.72 585 567 145.1

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