ASTROSAT CZTI

Data Quality Report

Orbit 12794

Creation date: 2024-06-27T16:32:18.386124
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/AS1A04_110T04_9000001886_12794cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12794cztM0_level2_quad_clean.evt
Size (bytes)207,023,04054,028,800
Size197.4 MB 51.5 MB
Events in quadrant A1,294,367378,598
Events in quadrant B1,883,358362,235
Events in quadrant C1,224,809363,556
Events in quadrant D1,689,141345,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054080
B072330
C052610
D066600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259010.038610%
B25901686.486486%
C259010.038610%
D2590642.471042%

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 2592 2592 0 0 0.00% 0.00%
B 2592 2592 86 86 3.32% 3.32%
C 2592 2592 1 1 0.04% 0.04%
D 2592 2592 50 50 1.93% 1.93%

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 12 189 6885 96.92 332 326 67.7
A 8 15 6033 84.33 332 326 67.7
A 0 226 3078 40.67 332 326 67.7
B 4 239 569082 9635.52 313 306 59.0
B 0 219 61522 1037.05 313 306 59.0
B 3 209 11798 194.68 313 306 59.0
C 14 234 4237 53.98 313 314 72.7
C 13 61 2355 28.08 313 314 72.7
C 3 202 829 7.09 313 314 72.7
D 8 195 219300 2917.87 316 309 75.1
D 1 52 190405 2532.87 316 309 75.1
D 7 80 24238 318.83 316 309 75.1

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