ASTROSAT CZTI

Data Quality Report

Orbit 27080

Creation date: 2024-06-27T19:36:15.277010
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/AS1T03_236T01_9000003908_27080cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27080cztM0_level2_quad_clean.evt
Size (bytes)1,494,103,680218,943,360
Size1.4 GB 208.8 MB
Events in quadrant A10,595,5291,382,290
Events in quadrant B12,954,6201,353,452
Events in quadrant C8,481,5531,409,939
Events in quadrant D12,099,4971,341,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422910
B0491040
C0357300
D0473070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165824742.858521%
B16583192711.620334%
C165832851.718628%
D165838044.848339%

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 19772 16585 252 252 1.27% 1.52%
B 19773 16586 1583 1583 8.01% 9.54%
C 19773 16586 5 5 0.03% 0.03%
D 19773 16586 622 622 3.15% 3.75%

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 2381420 5669.36 2107 2069 419.7
A 6 16 56257 129.12 2107 2069 419.7
A 12 189 27120 59.69 2107 2069 419.7
B 0 189 4550517 11913.73 2026 1977 381.8
B 3 112 391128 1019.28 2026 1977 381.8
B 10 246 53482 134.9 2026 1977 381.8
C 14 238 331295 683.44 2072 2091 481.7
C 15 208 67673 136.15 2072 2091 481.7
C 13 61 14269 25.28 2072 2091 481.7
D 1 52 3811508 7890.98 2045 1997 482.8
D 2 250 459706 948.09 2045 1997 482.8
D 2 234 73916 148.97 2045 1997 482.8

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