ASTROSAT CZTI

Data Quality Report

Orbit 38676

Creation date: 2024-06-27T21:54:57.897700
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_054T01_9000005392_38676cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38676cztM0_level2_quad_clean.evt
Size (bytes)355,861,44089,565,120
Size339.4 MB 85.4 MB
Events in quadrant A2,748,165611,405
Events in quadrant B4,443,323593,984
Events in quadrant C2,567,503596,554
Events in quadrant D3,001,988539,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115213
B0168042
C0109902
D0127142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5287310.586344%
B52874408.322300%
C528760.113486%
D52871322.496690%

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 7050 5288 18 18 0.26% 0.34%
B 7050 5288 269 269 3.82% 5.09%
C 7050 5288 4 4 0.06% 0.08%
D 7050 5288 116 116 1.65% 2.19%

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 393038 3246.23 594 584 120.9
A 12 189 29155 236.33 594 584 120.9
A 13 248 17092 136.55 594 584 120.9
B 4 251 2047267 18167.87 577 561 112.7
B 12 16 43367 379.97 577 561 112.7
B 0 189 25041 217.3 577 561 112.7
C 15 214 215114 1573.41 580 584 136.3
C 15 208 56393 409.32 580 584 136.3
C 2 16 12802 89.61 580 584 136.3
D 10 118 236924 1674.68 571 554 141.1
D 13 249 187508 1324.57 571 554 141.1
D 5 222 156566 1105.34 571 554 141.1

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