ASTROSAT CZTI

Data Quality Report

Orbit 08075

Creation date: 2024-06-27T15:27:36.333333
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/AS1A02_055T01_9000001114_08075cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08075cztM0_level2_quad_clean.evt
Size (bytes)488,378,88072,000,000
Size465.8 MB 68.7 MB
Events in quadrant A3,235,098437,553
Events in quadrant B3,367,417447,690
Events in quadrant C3,160,887453,112
Events in quadrant D4,610,234412,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138273
B0140812
C0134192
D0177292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6142570.928036%
B6142761.237382%
C6142450.732660%
D61424577.440573%

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 7452 6143 0 0 0.00% 0.00%
B 7452 6143 14 14 0.19% 0.23%
C 7452 6143 0 0 0.00% 0.00%
D 7452 6143 387 387 5.19% 6.30%

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 0 128 145318 898.29 801 787 160.9
A 0 254 7631 42.54 801 787 160.9
A 0 226 7475 41.57 801 787 160.9
B 11 51 111563 736.99 804 785 150.3
B 10 16 63587 417.81 804 785 150.3
B 0 214 42019 274.32 804 785 150.3
C 1 16 58306 320.06 791 799 179.7
C 8 222 8895 45.06 791 799 179.7
C 9 15 6702 32.85 791 799 179.7
D 1 52 1456302 7310.82 761 744 199.1
D 7 71 196739 984.42 761 744 199.1
D 1 83 26628 130.0 761 744 199.1

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