ASTROSAT CZTI

Data Quality Report

Orbit 15636

Creation date: 2024-06-27T17:11:26.444967
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/AS1T02_086T01_9000002316_15636cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15636cztM0_level2_quad_clean.evt
Size (bytes)544,803,840106,413,120
Size519.6 MB 101.5 MB
Events in quadrant A3,382,370692,232
Events in quadrant B3,556,647698,707
Events in quadrant C3,895,986681,765
Events in quadrant D5,177,746650,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148072
B0151081
C0162541
D0204381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71741832.550878%
B71741922.676331%
C71742173.024812%
D71745958.293839%

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 7405 7175 0 0 0.00% 0.00%
B 7405 7175 2 2 0.03% 0.03%
C 7405 7175 0 0 0.00% 0.00%
D 7405 7176 395 395 5.33% 5.50%

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 3 80 23170 126.34 872 853 176.6
A 0 226 7716 38.85 872 853 176.6
A 12 194 6463 31.76 872 853 176.6
B 0 189 55821 331.3 868 845 165.9
B 3 209 22322 129.43 868 845 165.9
B 12 111 19230 110.79 868 845 165.9
C 3 233 506489 2577.37 834 838 196.2
C 14 238 128645 651.45 834 838 196.2
C 7 247 10891 51.24 834 838 196.2
D 1 52 1714721 8482.5 833 807 202.1
D 12 110 216692 1068.46 833 807 202.1
D 4 95 30844 148.66 833 807 202.1

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