ASTROSAT CZTI

Data Quality Report

Orbit 33820

Creation date: 2024-06-27T20:53:04.180862
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/AS1A11_106T03_9000004826_33820cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33820cztM0_level2_quad_clean.evt
Size (bytes)516,349,44079,136,640
Size492.4 MB 75.5 MB
Events in quadrant A2,719,809502,316
Events in quadrant B3,394,044503,672
Events in quadrant C3,471,457502,963
Events in quadrant D5,645,418467,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123083
B0141902
C0141672
D0209912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004390.649567%
B60041121.865423%
C6004600.999334%
D60043145.229847%

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 7316 6005 30 30 0.41% 0.50%
B 7316 6005 61 61 0.83% 1.02%
C 7316 6005 63 63 0.86% 1.05%
D 7316 6005 267 267 3.65% 4.45%

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 15 169 81235 586.9 677 662 137.3
A 13 6 11508 79.0 677 662 137.3
A 13 254 10951 74.95 677 662 137.3
B 5 172 486364 3738.36 676 658 129.9
B 0 219 67298 512.91 676 658 129.9
B 0 190 43789 331.97 676 658 129.9
C 15 214 262024 1714.76 660 664 152.4
C 3 233 210433 1376.27 660 664 152.4
C 14 254 196549 1285.18 660 664 152.4
D 8 195 1340554 8359.94 650 632 160.3
D 12 235 879439 5482.98 650 632 160.3
D 2 250 285521 1777.46 650 632 160.3

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