ASTROSAT CZTI

Data Quality Report

Orbit 27894

Creation date: 2024-06-27T19:45:41.508924
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/AS1A10_048T01_9000004028_27894cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27894cztM0_level2_quad_clean.evt
Size (bytes)512,559,360108,040,320
Size488.8 MB 103.0 MB
Events in quadrant A3,106,434747,009
Events in quadrant B3,193,310754,692
Events in quadrant C3,064,651689,584
Events in quadrant D5,750,419660,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128610
B0131500
C0127720
D0213260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60261222.024560%
B60271252.074000%
C60271161.924672%
D60265559.210090%

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 7266 6026 0 0 0.00% 0.00%
B 7267 6027 2 2 0.03% 0.03%
C 7267 6027 0 0 0.00% 0.00%
D 7266 6026 369 369 5.08% 6.12%

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 13 254 10275 59.47 804 791 159.5
A 3 137 7291 40.76 804 791 159.5
A 0 226 6934 38.52 804 791 159.5
B 0 230 41740 270.35 795 776 151.5
B 10 245 26320 168.59 795 776 151.5
B 12 111 17813 112.44 795 776 151.5
C 14 238 123623 709.63 747 752 173.1
C 3 233 19165 106.34 747 752 173.1
C 2 16 5353 26.57 747 752 173.1
D 1 52 1656198 9444.46 737 716 175.3
D 8 195 737629 4204.06 737 716 175.3
D 13 104 448700 2555.73 737 716 175.3

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