ASTROSAT CZTI

Data Quality Report

Orbit 37698

Creation date: 2024-06-27T21:43:16.316550
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_075T01_9000005342_37698cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37698cztM0_level2_quad_clean.evt
Size (bytes)551,445,12074,269,440
Size525.9 MB 70.8 MB
Events in quadrant A4,521,385447,477
Events in quadrant B3,103,907464,058
Events in quadrant C3,172,554471,145
Events in quadrant D5,474,586424,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178953
B0134192
C0132392
D0206932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63171061.678012%
B6317731.155612%
C6317250.395757%
D63174116.506253%

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 9901 6318 34 34 0.34% 0.54%
B 9901 6317 57 57 0.58% 0.90%
C 9901 6316 22 22 0.22% 0.35%
D 9902 6317 475 475 4.80% 7.52%

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 15 222 1224069 8627.5 710 696 141.8
A 10 83 337493 2375.17 710 696 141.8
A 13 248 139947 982.03 710 696 141.8
B 5 172 168925 1240.68 711 691 135.6
B 5 255 50443 366.91 711 691 135.6
B 0 230 37372 270.51 711 691 135.6
C 15 214 284832 1760.98 700 705 161.3
C 14 254 104510 643.37 700 705 161.3
C 0 10 51315 313.67 700 705 161.3
D 12 227 2375342 14523.97 681 662 163.5
D 13 249 227033 1384.53 681 662 163.5
D 7 38 66807 404.55 681 662 163.5

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