ASTROSAT CZTI

Data Quality Report

Orbit 40850

Creation date: 2024-06-27T22:21:18.910317
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_104T02_9000005572_40850cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40850cztM0_level2_quad_clean.evt
Size (bytes)387,748,80088,836,480
Size369.8 MB 84.7 MB
Events in quadrant A2,811,440615,391
Events in quadrant B2,457,026634,151
Events in quadrant C2,745,035591,169
Events in quadrant D5,936,449486,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115143
B0106842
C0113542
D0212702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5184170.327932%
B5184120.231481%
C5184761.466049%
D518478515.142747%

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 7128 5186 10 10 0.14% 0.19%
B 7128 5186 3 3 0.04% 0.06%
C 7128 5186 64 64 0.90% 1.23%
D 7128 5186 891 891 12.50% 17.18%

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 495545 4150.88 580 569 119.2
A 12 189 25569 209.65 580 569 119.2
A 13 248 24420 200.01 580 569 119.2
B 0 190 74729 665.67 581 565 111.4
B 7 202 68101 606.18 581 565 111.4
B 4 171 28090 247.05 581 565 111.4
C 15 214 221041 1679.46 566 571 131.3
C 0 10 180991 1374.37 566 571 131.3
C 14 254 99695 755.09 566 571 131.3
D 12 79 3395316 25465.13 545 529 133.3
D 13 249 260975 1953.67 545 529 133.3
D 2 249 81813 609.73 545 529 133.3

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