ASTROSAT CZTI

Data Quality Report

Orbit 11471

Creation date: 2024-06-27T16:13:24.188283
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/AS1G08_032T01_9000001680_11471cztM0_level2.evt modeM0/AS1G08_032T01_9000001680_11471cztM0_level2_quad_clean.evt
Size (bytes)219,211,20019,820,160
Size209.1 MB 18.9 MB
Events in quadrant A1,284,10298,415
Events in quadrant B2,080,20799,215
Events in quadrant C1,263,56599,727
Events in quadrant D1,809,25092,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059801
B081651
C059561
D074391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A294040.136054%
B29402739.285714%
C294040.136054%
D2940913.095238%

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 2941 2941 1 1 0.03% 0.03%
B 2941 2941 152 152 5.17% 5.17%
C 2941 2941 2 2 0.07% 0.07%
D 2941 2941 67 67 2.28% 2.28%

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 14 235 14600 208.3 325 318 68.6
A 9 143 5259 72.06 325 318 68.6
A 13 254 4528 61.4 325 318 68.6
B 4 239 412366 6655.36 314 306 61.9
B 3 64 394497 6366.75 314 306 61.9
B 0 214 13722 216.69 314 306 61.9
C 12 4 10213 129.22 321 323 76.5
C 13 61 2437 27.62 321 323 76.5
C 3 202 820 6.49 321 323 76.5
D 1 52 161491 2083.82 311 302 77.4
D 5 222 150648 1943.64 311 302 77.4
D 10 253 137101 1768.51 311 302 77.4

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