ASTROSAT CZTI

Data Quality Report

Orbit 35882

Creation date: 2022-06-08T21:30:30.580164
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/AS1A11_080T01_9000005146_35882cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35882cztM0_level2_quad_clean.evt
Size (bytes)377,112,96049,420,800
Size359.6 MB 47.1 MB
Events in quadrant A2,141,036336,310
Events in quadrant B4,260,739251,016
Events in quadrant C2,141,977319,722
Events in quadrant D2,603,427305,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152
B0143
C0155
D0154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0872
C0881
D0894

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09301564
B0187233620
C09327621
D011270956

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A410230.073135%
B3806109028.638991%
C4071471.154507%
D40231152.858563%

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 4417 4311 0 0 0.00% 0.00%
B 4412 4165 804 804 18.22% 19.30%
C 4417 4285 28 28 0.63% 0.65%
D 4417 4276 68 68 1.54% 1.59%

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 10 83 98917 959.49 504 493 102.6
A 15 169 91124 883.52 504 493 102.6
A 13 254 6723 60.73 504 493 102.6
B 5 63 2609269 36017.48 373 364 72.4
B 5 172 99204 1364.54 373 364 72.4
B 0 213 44320 606.84 373 364 72.4
C 15 214 166981 1510.08 472 477 110.3
C 0 10 122433 1106.06 472 477 110.3
C 1 23 9108 78.28 472 477 110.3
D 7 223 191117 1637.27 469 456 116.5
D 10 118 168765 1445.32 469 456 116.5
D 13 13 107787 921.69 469 456 116.5

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