ASTROSAT CZTI

Data Quality Report

Orbit 11917

Creation date: 2024-06-27T16:20:03.607759
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/AS1A04_088T05_9000001764_11917cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11917cztM0_level2_quad_clean.evt
Size (bytes)579,280,32076,003,200
Size552.4 MB 72.5 MB
Events in quadrant A4,031,604452,069
Events in quadrant B5,058,318423,680
Events in quadrant C3,382,674463,421
Events in quadrant D4,565,095442,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167892
B0200161
C0153261
D0183701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74691371.834248%
B74696498.689249%
C7469560.749766%
D74692273.039229%

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 7721 7471 1 1 0.01% 0.01%
B 7721 7471 429 429 5.56% 5.74%
C 7721 7472 5 5 0.06% 0.07%
D 7721 7471 165 165 2.14% 2.21%

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 8 15 204556 1146.19 871 851 177.7
A 1 162 178071 997.16 871 851 177.7
A 1 178 92852 517.66 871 851 177.7
B 4 239 1249531 7519.77 854 832 166.1
B 15 204 212720 1276.01 854 832 166.1
B 10 245 107337 641.38 854 832 166.1
C 14 234 23612 113.5 862 868 200.4
C 13 61 6273 26.97 862 868 200.4
C 3 202 2120 6.25 862 868 200.4
D 4 95 336972 1647.71 848 826 204.0
D 8 195 285416 1394.99 848 826 204.0
D 10 199 282230 1379.38 848 826 204.0

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