ASTROSAT CZTI

Data Quality Report

Orbit 40419

Creation date: 2024-06-27T22:15:52.560135
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_022T01_9000005540_40419cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40419cztM0_level2_quad_clean.evt
Size (bytes)322,361,28085,354,560
Size307.4 MB 81.4 MB
Events in quadrant A2,634,272597,113
Events in quadrant B2,825,572608,780
Events in quadrant C2,562,188579,673
Events in quadrant D3,521,872449,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109533
B0117692
C0106112
D0138712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981160.321221%
B4981450.903433%
C4981130.260992%
D498195119.092552%

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 7043 4982 4 4 0.06% 0.08%
B 7043 4982 29 29 0.41% 0.58%
C 7043 4982 11 11 0.16% 0.22%
D 7043 4982 189 189 2.68% 3.79%

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 458871 4013.57 559 549 114.2
A 13 248 12254 102.5 559 549 114.2
A 3 137 5803 46.01 559 549 114.2
B 7 202 357102 3348.05 555 540 106.5
B 5 255 233446 2186.94 555 540 106.5
B 3 112 29582 272.7 555 540 106.5
C 15 214 217268 1683.73 551 555 128.7
C 14 254 180636 1399.12 551 555 128.7
C 0 10 13655 101.78 551 555 128.7
D 12 227 797655 6337.63 504 490 125.8
D 13 171 301235 2390.99 504 490 125.8
D 12 191 195631 1551.41 504 490 125.8

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