ASTROSAT CZTI

Data Quality Report

Orbit 27092

Creation date: 2024-06-27T19:36:25.127857
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/AS1T03_231T01_9000003910_27092cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27092cztM0_level2_quad_clean.evt
Size (bytes)564,433,920101,882,880
Size538.3 MB 97.2 MB
Events in quadrant A3,819,164683,037
Events in quadrant B4,770,887678,863
Events in quadrant C3,167,746655,103
Events in quadrant D4,898,653617,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155870
B0188420
C0134750
D0187230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64621302.011761%
B64621943.002167%
C64621011.562984%
D64634106.343803%

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 7447 6463 40 40 0.54% 0.62%
B 7447 6463 69 69 0.93% 1.07%
C 7447 6463 0 0 0.00% 0.00%
D 7448 6464 349 349 4.69% 5.40%

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 6 16 400889 2431.71 815 797 164.5
A 14 235 247709 1500.7 815 797 164.5
A 12 189 25705 151.39 815 797 164.5
B 0 189 1397254 9195.41 798 777 151.9
B 10 245 170630 1118.43 798 777 151.9
B 3 112 35683 229.85 798 777 151.9
C 14 238 125187 682.37 778 782 182.3
C 15 208 5346 25.03 778 782 182.3
C 13 61 5303 24.8 778 782 182.3
D 1 52 1506951 8101.47 775 753 185.9
D 2 250 209177 1121.06 775 753 185.9
D 11 176 150573 805.85 775 753 185.9

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