ASTROSAT CZTI

Data Quality Report

Orbit 16129

Creation date: 2024-06-27T17:18:23.978251
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/AS1C03_015T04_9000002382_16129cztM0_level2.evt modeM0/AS1C03_015T04_9000002382_16129cztM0_level2_quad_clean.evt
Size (bytes)367,548,48097,041,600
Size350.5 MB 92.5 MB
Events in quadrant A2,504,242651,378
Events in quadrant B3,108,334654,860
Events in quadrant C2,480,231635,369
Events in quadrant D2,672,002620,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112542
B0128991
C0110721
D0120031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5385140.259981%
B5385931.727019%
C5385350.649954%
D53851442.674095%

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 5776 5386 3 3 0.05% 0.06%
B 5776 5386 13 13 0.23% 0.24%
C 5775 5386 0 0 0.00% 0.00%
D 5775 5385 111 111 1.92% 2.06%

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 15 174 93062 727.47 620 604 127.1
A 8 247 14901 112.49 620 604 127.1
A 9 143 10922 81.18 620 604 127.1
B 5 65 503570 4264.82 620 603 117.9
B 0 189 45673 382.16 620 603 117.9
B 0 229 32593 271.25 620 603 117.9
C 14 238 91081 647.69 596 597 139.7
C 3 233 29739 208.6 596 597 139.7
C 3 9 21828 151.97 596 597 139.7
D 1 52 339391 2347.11 594 575 144.4
D 10 70 61597 422.72 594 575 144.4
D 2 234 24625 166.6 594 575 144.4

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