ASTROSAT CZTI

Data Quality Report

Orbit 40736

Creation date: 2024-06-27T22:19:48.222981
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_066T01_9000005562_40736cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40736cztM0_level2_quad_clean.evt
Size (bytes)459,224,64083,404,800
Size438.0 MB 79.5 MB
Events in quadrant A3,067,271617,190
Events in quadrant B2,458,516641,793
Events in quadrant C7,996,147413,207
Events in quadrant D3,089,317503,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121843
B0103862
C0271442
D0124532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4979831.667001%
B4979130.261097%
C4979196039.365334%
D497964212.894155%

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 7072 4980 78 78 1.10% 1.57%
B 7072 4980 4 4 0.06% 0.08%
C 7072 4979 1922 1922 27.18% 38.60%
D 7072 4979 96 96 1.36% 1.93%

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 466914 3969.97 581 570 117.5
A 13 248 247148 2099.11 581 570 117.5
A 12 189 101897 862.59 581 570 117.5
B 0 190 48267 426.22 586 571 111.9
B 0 229 37502 330.02 586 571 111.9
B 5 255 29169 255.56 586 571 111.9
C 9 187 5789114 49248.54 508 513 117.5
C 15 214 186119 1579.11 508 513 117.5
C 14 254 17792 147.01 508 513 117.5
D 2 249 268169 2008.75 546 533 133.2
D 12 191 168922 1263.85 546 533 133.2
D 1 47 144832 1083.04 546 533 133.2

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