ASTROSAT CZTI

Data Quality Report

Orbit 09268

Creation date: 2024-06-27T15:43:39.644847
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/AS1A03_091T06_9000001302_09268cztM0_level2.evt modeM0/AS1A03_091T06_9000001302_09268cztM0_level2_quad_clean.evt
Size (bytes)221,489,28020,142,720
Size211.2 MB 19.2 MB
Events in quadrant A2,020,11999,683
Events in quadrant B1,431,035105,871
Events in quadrant C1,421,774103,423
Events in quadrant D1,640,04697,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602
B0604
C0604
D0606

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08397535
B06358307
C06328257
D06953300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281030810.960854%
B28372167.613676%
C28561665.812325%
D28531826.379250%

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 3130 2949 48 48 1.53% 1.63%
B 3130 2957 0 0 0.00% 0.00%
C 3130 2964 0 0 0.00% 0.00%
D 3130 2958 26 26 0.83% 0.88%

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 8 5 346254 4610.82 355 345 75.0
A 5 16 229982 3060.96 355 345 75.0
A 4 2 40934 541.03 355 345 75.0
B 12 111 8324 108.91 366 356 73.2
B 11 111 6720 86.98 366 356 73.2
B 14 111 4966 63.01 366 356 73.2
C 9 68 10135 114.52 359 360 85.4
C 13 61 2765 28.18 359 360 85.4
C 8 128 2673 27.1 359 360 85.4
D 1 52 149057 1678.47 355 342 88.6
D 7 71 94547 1063.24 355 342 88.6
D 2 136 25088 279.29 355 342 88.6

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