ASTROSAT CZTI

Data Quality Report

Orbit 32237

Creation date: 2024-06-27T20:37:56.547633
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/AS1T04_054T01_9000004694_32237cztM0_level2.evt modeM0/AS1T04_054T01_9000004694_32237cztM0_level2_quad_clean.evt
Size (bytes)648,953,28095,984,640
Size618.9 MB 91.5 MB
Events in quadrant A3,270,122649,358
Events in quadrant B6,200,253625,664
Events in quadrant C3,861,992613,544
Events in quadrant D5,898,152580,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134932
B0225382
C0154172
D0220552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269300.478545%
B62695989.539001%
C62692493.971925%
D62681532.440970%

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 7605 6271 2 2 0.03% 0.03%
B 7605 6271 258 258 3.39% 4.11%
C 7605 6271 81 81 1.07% 1.29%
D 7604 6270 79 79 1.04% 1.26%

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 15 174 55142 335.33 820 806 162.0
A 13 6 21667 128.74 820 806 162.0
A 12 96 21094 125.21 820 806 162.0
B 6 159 1705871 11489.19 795 776 148.4
B 4 80 1255411 8453.92 795 776 148.4
B 5 172 67536 449.84 795 776 148.4
C 0 10 405427 2236.33 780 788 180.9
C 3 233 191437 1053.67 780 788 180.9
C 14 238 143714 789.91 780 788 180.9
D 8 195 2638713 14171.22 778 757 186.1
D 12 233 176355 943.32 778 757 186.1
D 13 249 69974 371.84 778 757 186.1

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