ASTROSAT CZTI

Data Quality Report

Orbit 17077

Creation date: 2024-06-27T17:31:44.133707
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/AS1A05_004T04_9000002534_17077cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17077cztM0_level2_quad_clean.evt
Size (bytes)475,562,88094,236,480
Size453.5 MB 89.9 MB
Events in quadrant A2,988,324616,471
Events in quadrant B3,357,678626,290
Events in quadrant C3,353,945596,264
Events in quadrant D4,270,757571,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131492
B0142672
C0140342
D0170152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6356330.519194%
B6356590.928257%
C6356641.006923%
D63562503.933291%

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 8616 6358 1 1 0.01% 0.02%
B 8616 6358 7 7 0.08% 0.11%
C 8616 6358 0 0 0.00% 0.00%
D 8616 6358 192 192 2.23% 3.02%

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 4 2 9974 59.29 775 759 155.4
A 0 226 6844 39.15 775 759 155.4
A 12 194 5822 32.57 775 759 155.4
B 0 189 206775 1410.04 777 759 146.1
B 0 197 45552 306.58 777 759 146.1
B 0 246 29709 198.14 777 759 146.1
C 3 233 299541 1697.22 752 760 176.0
C 14 238 115455 651.52 752 760 176.0
C 7 247 7907 40.6 752 760 176.0
D 5 222 1183863 6515.34 753 733 181.6
D 10 70 168468 923.69 753 733 181.6
D 15 0 50787 275.64 753 733 181.6

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