ASTROSAT CZTI

Data Quality Report

Orbit 37147

Creation date: 2024-06-27T21:36:11.074761
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_079T01_9000005284_37147cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37147cztM0_level2_quad_clean.evt
Size (bytes)450,296,64075,559,680
Size429.4 MB 72.1 MB
Events in quadrant A2,666,281498,642
Events in quadrant B3,334,269477,919
Events in quadrant C3,224,894483,583
Events in quadrant D4,055,453459,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112983
B0133552
C0127402
D0157022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5255140.266413%
B52552755.233111%
C52551192.264510%
D52551773.368221%

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 7137 5256 6 6 0.08% 0.11%
B 7137 5256 241 241 3.38% 4.59%
C 7137 5256 80 80 1.12% 1.52%
D 7137 5256 167 167 2.34% 3.18%

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 260075 2109.17 609 598 123.0
A 13 248 33460 267.12 609 598 123.0
A 13 254 9042 68.64 609 598 123.0
B 0 182 537482 4700.61 586 570 114.2
B 5 172 222436 1942.41 586 570 114.2
B 5 255 158229 1380.29 586 570 114.2
C 0 10 320874 2316.42 589 594 138.3
C 14 254 253993 1832.7 589 594 138.3
C 15 214 242981 1753.06 589 594 138.3
D 10 253 792571 5547.94 587 572 142.8
D 2 249 336206 2351.11 587 572 142.8
D 12 233 211047 1474.37 587 572 142.8

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