ASTROSAT CZTI

Data Quality Report

Orbit 26074

Creation date: 2024-06-27T19:24:32.573681
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/AS1A09_113T01_9000003768_26074cztM0_level2.evt modeM0/AS1A09_113T01_9000003768_26074cztM0_level2_quad_clean.evt
Size (bytes)498,502,080107,622,720
Size475.4 MB 102.6 MB
Events in quadrant A3,503,971701,862
Events in quadrant B3,584,904704,313
Events in quadrant C3,441,977675,919
Events in quadrant D4,070,208668,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151540
B0153090
C0150480
D0168560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7305580.793977%
B7306831.136053%
C7306821.122365%
D7306680.930742%

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 7525 7306 0 0 0.00% 0.00%
B 7526 7306 4 4 0.05% 0.05%
C 7526 7307 0 0 0.00% 0.00%
D 7526 7307 46 46 0.61% 0.63%

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 0 13 42759 232.17 895 876 180.4
A 13 254 13440 69.64 895 876 180.4
A 3 137 8287 41.08 895 876 180.4
B 15 33 45885 265.95 886 865 169.3
B 0 190 30281 173.77 886 865 169.3
B 12 111 20634 116.78 886 865 169.3
C 14 238 135476 673.4 845 851 199.9
C 3 233 6785 29.68 845 851 199.9
C 13 61 5976 25.64 845 851 199.9
D 1 52 589961 2676.88 858 834 220.1
D 12 233 126785 572.3 858 834 220.1
D 8 195 46958 209.58 858 834 220.1

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