ASTROSAT CZTI

Data Quality Report

Orbit 42512

Creation date: 2024-06-27T22:41:03.793719
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/AS1C07_001T10_9000005806_42512cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42512cztM0_level2_quad_clean.evt
Size (bytes)709,937,280128,672,640
Size677.0 MB 122.7 MB
Events in quadrant A4,455,378891,171
Events in quadrant B4,719,185896,542
Events in quadrant C12,047,682714,986
Events in quadrant D4,409,476811,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186372
B0197722
C0413812
D0193922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8364220.263032%
B83651081.291094%
C8365200824.004782%
D83651561.864913%

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 11318 8366 12 12 0.11% 0.14%
B 11319 8367 95 95 0.84% 1.14%
C 11319 8367 2371 2371 20.95% 28.34%
D 11319 8367 123 123 1.09% 1.47%

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 754040 4100.83 896 877 183.7
A 13 248 136005 735.75 896 877 183.7
A 12 189 51425 275.22 896 877 183.7
B 0 229 1117571 6564.51 883 860 170.1
B 0 245 75978 441.58 883 860 170.1
B 12 111 22035 124.48 883 860 170.1
C 0 239 8494313 44527.22 820 823 190.7
C 15 214 347680 1818.4 820 823 190.7
C 13 61 5411 24.05 820 823 190.7
D 12 233 224617 1056.47 869 845 211.8
D 1 52 208920 982.36 869 845 211.8
D 2 249 166413 781.68 869 845 211.8

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