ASTROSAT CZTI

Data Quality Report

Orbit 42722

Creation date: 2024-06-27T22:43:28.074526
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/AS1A05_013T01_9000005822_42722cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42722cztM0_level2_quad_clean.evt
Size (bytes)335,255,04089,657,280
Size319.7 MB 85.5 MB
Events in quadrant A3,112,414618,937
Events in quadrant B3,651,377593,774
Events in quadrant C2,770,620591,228
Events in quadrant D2,474,210550,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122982
B0141582
C0110782
D0107912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5152420.815217%
B51524158.055124%
C51521011.960404%
D5152160.310559%

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 7305 5153 30 30 0.41% 0.58%
B 7305 5153 377 377 5.16% 7.32%
C 7305 5153 25 25 0.34% 0.49%
D 7305 5153 11 11 0.15% 0.21%

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 565162 4605.35 599 588 122.6
A 13 248 131061 1064.3 599 588 122.6
A 12 189 95403 773.43 599 588 122.6
B 6 235 780772 6988.57 580 564 111.6
B 6 220 261513 2337.4 580 564 111.6
B 6 203 217299 1941.36 580 564 111.6
C 15 214 212909 1590.45 574 576 133.5
C 14 254 186029 1389.11 574 576 133.5
C 3 233 117320 874.46 574 576 133.5
D 2 249 67702 476.83 582 565 140.8
D 10 199 46245 324.44 582 565 140.8
D 12 6 29587 206.13 582 565 140.8

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