ASTROSAT CZTI

Data Quality Report

Orbit 00889

Creation date: 2024-06-27T14:04:19.329364
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/AS1P01_161T03_9000000178_00889cztM0_level2.evt modeM0/AS1P01_161T03_9000000178_00889cztM0_level2_quad_clean.evt
Size (bytes)1,268,239,68072,570,240
Size1.2 GB 69.2 MB
Events in quadrant A9,005,965433,733
Events in quadrant B11,908,949401,137
Events in quadrant C8,737,932430,655
Events in quadrant D8,264,537414,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320470
B0407310
C0312660
D0298250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7436540.726197%
B74367109.548144%
C7436350.470683%
D7437410.551298%

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 7751 7438 250 250 3.23% 3.36%
B 7751 7438 1481 1481 19.11% 19.91%
C 7751 7438 210 210 2.71% 2.82%
D 7751 7438 214 214 2.76% 2.88%

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 15 127 14981 22.18 2343 2360 569.1
A 11 79 9290 12.18 2343 2360 569.1
A 3 111 7399 8.85 2343 2360 569.1
B 3 0 2597616 4685.18 2354 2369 553.9
B 8 38 188809 336.58 2354 2369 553.9
B 0 220 90188 158.54 2354 2369 553.9
C 3 111 32139 48.2 2210 2290 619.2
C 15 241 25880 38.09 2210 2290 619.2
C 3 79 17893 25.2 2210 2290 619.2
D 10 125 62575 93.87 2163 2231 642.8
D 1 4 58372 87.33 2163 2231 642.8
D 13 169 34082 49.55 2163 2231 642.8

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