ASTROSAT CZTI

Data Quality Report

Orbit 44819

Creation date: 2024-06-27T23:07:32.366307
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/AS1A13_024T02_9000006026_44819cztM0_level2.fits modeM0/AS1A13_024T02_9000006026_44819cztM0_level2_quad_clean.evt
Size (bytes)636,154,560101,661,120
Size606.7 MB 97.0 MB
Events in quadrant A7,449,561650,445
Events in quadrant B3,337,850738,426
Events in quadrant C3,087,603691,419
Events in quadrant D9,176,181549,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268381
B0142771
C0137961
D0317911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A642587713.649805%
B64261181.836290%
C64261061.649549%
D6425121518.910506%

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 7470 6426 659 659 8.82% 10.26%
B 7471 6426 30 30 0.40% 0.47%
C 7471 6426 35 35 0.47% 0.54%
D 7470 6426 1204 1204 16.12% 18.74%

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 15 223 2657304 18651.27 690 677 142.4
A 10 83 2024277 14207.01 690 677 142.4
A 13 248 82062 571.38 690 677 142.4
B 0 189 138635 982.97 718 697 140.3
B 5 255 74417 525.34 718 697 140.3
B 5 172 74338 524.78 718 697 140.3
C 14 254 109172 663.27 705 708 163.5
C 12 2 92188 559.41 705 708 163.5
C 1 3 57706 348.55 705 708 163.5
D 13 187 2911670 17560.7 656 633 165.8
D 2 249 1266356 7635.42 656 633 165.8
D 13 174 816356 4920.81 656 633 165.8

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