ASTROSAT CZTI

Data Quality Report

Orbit 40092

Creation date: 2024-06-27T22:12:14.945589
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_004T01_9000005520_40092cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40092cztM0_level2_quad_clean.evt
Size (bytes)377,559,36073,428,480
Size360.1 MB 70.0 MB
Events in quadrant A2,348,836505,279
Events in quadrant B2,153,315517,739
Events in quadrant C5,281,331444,868
Events in quadrant D3,831,206429,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098672
B095321
C01887311
D0147218

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A464490.193798%
B464460.129199%
C464165614.134885%
D46433978.550506%

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 6106 4645 3 3 0.05% 0.06%
B 6106 4645 1 1 0.02% 0.02%
C 6106 4644 559 559 9.15% 12.04%
D 6106 4645 333 333 5.45% 7.17%

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 344944 3263.04 506 495 105.6
A 2 79 29949 279.02 506 495 105.6
A 13 6 8036 71.44 506 495 105.6
B 0 189 80357 797.0 506 490 100.2
B 4 171 47635 470.46 506 490 100.2
B 0 230 22307 217.71 506 490 100.2
C 9 187 3225196 28852.26 473 475 111.8
C 15 214 178965 1596.99 473 475 111.8
C 15 208 15185 131.61 473 475 111.8
D 12 227 1256068 10627.02 479 465 118.2
D 13 249 378255 3197.49 479 465 118.2
D 12 218 110585 932.02 479 465 118.2

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