ASTROSAT CZTI

Data Quality Report

Orbit 17648

Creation date: 2024-06-27T17:39:05.822644
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_118T02_9000002612_17648cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17648cztM0_level2_quad_clean.evt
Size (bytes)525,378,24080,568,000
Size501.0 MB 76.8 MB
Events in quadrant A3,423,390492,015
Events in quadrant B3,604,787497,113
Events in quadrant C3,525,803477,056
Events in quadrant D4,863,181466,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148971
B0153001
C0149352
D0193051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7277911.250515%
B7278961.319044%
C72771331.827676%
D72772653.641611%

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 7682 7278 0 0 0.00% 0.00%
B 7683 7279 3 3 0.04% 0.04%
C 7682 7277 0 0 0.00% 0.00%
D 7682 7278 152 152 1.98% 2.09%

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 14 237 13370 69.25 887 866 180.6
A 0 226 7913 39.03 887 866 180.6
A 3 137 6529 31.36 887 866 180.6
B 0 230 77839 453.57 880 857 169.7
B 4 80 23453 133.13 880 857 169.7
B 0 189 20544 115.99 880 857 169.7
C 14 238 129530 649.06 845 852 198.3
C 3 233 93434 466.99 845 852 198.3
C 5 218 7346 32.76 845 852 198.3
D 1 52 1227037 5825.85 854 827 210.5
D 13 189 302676 1434.11 854 827 210.5
D 2 120 36249 168.29 854 827 210.5

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