ASTROSAT CZTI

Data Quality Report

Orbit 16808

Creation date: 2024-06-27T17:28:05.332137
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_140T01_9000002496_16808cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16808cztM0_level2_quad_clean.evt
Size (bytes)210,790,08025,162,560
Size201.0 MB 24.0 MB
Events in quadrant A1,424,235144,867
Events in quadrant B1,709,222147,461
Events in quadrant C1,454,384140,930
Events in quadrant D1,615,278139,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057592
B067091
C059321
D064451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2633712.696544%
B26331736.570452%
C2633742.810482%
D2633542.050893%

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 3224 2635 2 2 0.06% 0.08%
B 3224 2635 47 47 1.46% 1.78%
C 3224 2635 0 0 0.00% 0.00%
D 3224 2635 25 25 0.78% 0.95%

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 61499 827.54 352 344 73.9
A 9 143 3800 46.77 352 344 73.9
A 0 226 3300 40.0 352 344 73.9
B 7 220 146350 2134.04 343 334 68.4
B 0 229 108366 1578.9 343 334 68.4
B 15 35 82184 1196.25 343 334 68.4
C 3 233 105293 1316.76 332 334 79.7
C 14 238 50699 631.85 332 334 79.7
C 13 61 2347 25.25 332 334 79.7
D 1 52 222258 2616.46 341 331 84.8
D 15 0 44273 518.06 341 331 84.8
D 12 218 39213 458.41 341 331 84.8

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