ASTROSAT CZTI

Data Quality Report

Orbit 26965

Creation date: 2024-06-27T19:35:02.392030
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/AS1C05_019T03_9000003898_26965cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26965cztM0_level2_quad_clean.evt
Size (bytes)856,056,960119,410,560
Size816.4 MB 113.9 MB
Events in quadrant A11,445,795512,580
Events in quadrant B5,922,684899,008
Events in quadrant C3,265,895915,891
Events in quadrant D4,867,359848,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383330
B0218700
C0138400
D0187610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277437469.682970%
B627782113.079497%
C6277711.131114%
D62774346.914131%

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 7561 6277 3443 3443 45.54% 54.85%
B 7562 6278 525 525 6.94% 8.36%
C 7562 6278 3 3 0.04% 0.05%
D 7562 6278 354 354 4.68% 5.64%

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 9450947 98427.58 479 470 96.0
A 0 13 95209 986.72 479 470 96.0
A 6 16 25682 262.59 479 470 96.0
B 0 189 2724361 19066.1 777 759 142.9
B 5 172 91276 633.65 777 759 142.9
B 0 244 27017 183.81 777 759 142.9
C 14 238 126384 690.09 785 789 182.0
C 15 208 47066 254.27 785 789 182.0
C 8 128 9487 47.79 785 789 182.0
D 1 52 1206219 6740.63 758 739 178.8
D 2 250 532247 2972.01 758 739 178.8
D 11 176 125702 698.75 758 739 178.8

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