ASTROSAT CZTI

Data Quality Report

Orbit 14591

Creation date: 2024-06-27T16:57:14.612357
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/AS1G08_055T02_9000002148_14591cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14591cztM0_level2_quad_clean.evt
Size (bytes)716,192,640102,536,640
Size683.0 MB 97.8 MB
Events in quadrant A7,930,899647,732
Events in quadrant B3,704,450684,974
Events in quadrant C4,650,618672,382
Events in quadrant D4,956,501637,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282463
B0153182
C0188022
D0190222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66354707.083647%
B66351422.140166%
C66351141.718161%
D66356119.208742%

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 9231 6638 33 33 0.36% 0.50%
B 9231 6638 42 42 0.45% 0.63%
C 9231 6638 0 0 0.00% 0.00%
D 9231 6637 437 437 4.73% 6.58%

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 23 4421680 26395.38 836 819 167.5
A 0 226 266111 1583.96 836 819 167.5
A 12 189 15690 88.79 836 819 167.5
B 10 16 249815 1528.13 858 836 162.9
B 0 214 24772 146.91 858 836 162.9
B 0 189 22655 133.92 858 836 162.9
C 3 233 1349101 6936.86 844 851 194.4
C 3 234 7018 31.73 844 851 194.4
C 13 61 5975 26.36 844 851 194.4
D 10 199 1473324 7776.03 803 783 189.4
D 12 110 199197 1047.76 803 783 189.4
D 2 120 149501 785.33 803 783 189.4

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