ASTROSAT CZTI

Data Quality Report

Orbit 40412

Creation date: 2024-06-27T22:15:47.170315
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_022T01_9000005540_40412cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40412cztM0_level2_quad_clean.evt
Size (bytes)523,808,64078,894,720
Size499.5 MB 75.2 MB
Events in quadrant A3,131,695595,883
Events in quadrant B4,359,523588,361
Events in quadrant C2,783,730588,874
Events in quadrant D8,682,427227,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126663
B0166652
C0117842
D0296102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5549841.513786%
B55493676.613804%
C5549220.396468%
D5549337260.767706%

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 7192 5550 61 61 0.85% 1.10%
B 7192 5550 251 251 3.49% 4.52%
C 7192 5550 13 13 0.18% 0.23%
D 7192 5549 2174 2174 30.23% 39.18%

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 490034 3988.7 598 585 122.7
A 13 248 308220 2507.03 598 585 122.7
A 15 235 12041 93.36 598 585 122.7
B 5 255 1091701 9602.89 582 566 113.6
B 7 202 865444 7611.64 582 566 113.6
B 3 112 54190 471.94 582 566 113.6
C 15 214 242095 1754.62 585 588 137.6
C 14 254 182958 1324.97 585 588 137.6
C 3 233 58979 424.23 585 588 137.6
D 2 250 6873015 75477.9 367 356 91.1
D 12 191 145434 1593.3 367 356 91.1
D 9 19 62961 687.55 367 356 91.1

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