ASTROSAT CZTI

Data Quality Report

Orbit 25404

Creation date: 2024-06-27T19:17:16.099786
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/AS1A09_057T04_9000003712_25404cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25404cztM0_level2_quad_clean.evt
Size (bytes)1,681,957,440288,616,320
Size1.6 GB 275.2 MB
Events in quadrant A11,372,5391,878,781
Events in quadrant B11,127,1511,892,115
Events in quadrant C11,190,8091,787,752
Events in quadrant D15,856,1621,761,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457260
B0450240
C0455750
D0623490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206602471.195547%
B206603011.456922%
C206593871.873276%
D206606763.272023%

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 25840 20660 0 0 0.00% 0.00%
B 25840 20660 26 26 0.10% 0.13%
C 25840 20660 0 0 0.00% 0.00%
D 25840 20660 404 404 1.56% 1.96%

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 6 16 329392 583.58 2845 2796 559.6
A 15 173 81496 140.63 2845 2796 559.6
A 13 254 27653 44.42 2845 2796 559.6
B 0 229 94250 179.42 2767 2704 510.2
B 15 32 83757 158.85 2767 2704 510.2
B 12 111 61265 114.77 2767 2704 510.2
C 14 238 439573 710.22 2683 2710 615.1
C 7 87 206569 331.42 2683 2710 615.1
C 7 247 36338 54.67 2683 2710 615.1
D 8 195 2420697 3729.57 2750 2680 648.3
D 1 52 1699713 2617.52 2750 2680 648.3
D 7 238 1101042 1694.12 2750 2680 648.3

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