ASTROSAT CZTI

Data Quality Report

Orbit 20240331_A13_012T08_9000006150_level2

Creation date: 2024-04-03T14:52:36.589742
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_012T08_9000006150cztM0_level2.fits modeM0/AS1A13_012T08_9000006150cztM0_level2_quad_clean.evt
Size (bytes)277,176,960302,261,760
Size264.3 MB 288.3 MB
Events in quadrant A1,622,0021,830,106
Events in quadrant B1,498,6421,728,616
Events in quadrant C1,643,5981,775,380
Events in quadrant D1,416,6861,608,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0998860
B01190210
C0674830
D0733950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06500
B06500
C06500
D06500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A321787662.380508%
B32178383411.914973%
C321783110.966499%
D321785911.836659%

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 33887 32174 0 0 0.00% 0.00%
B 33887 32168 0 0 0.00% 0.00%
C 33888 32176 0 0 0.00% 0.00%
D 33887 32169 0 0 0.00% 0.00%

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 7 110 1339 8.45 422 393 111.9
A 15 236 1323 8.31 422 393 111.9
A 0 29 1212 7.32 422 393 111.9
B 2 9 1388 12.55 394 375 80.7
B 2 8 1130 9.36 394 375 80.7
B 3 17 1068 8.59 394 375 80.7
C 3 202 1256 7.46 434 402 114.5
C 1 81 1227 7.21 434 402 114.5
C 3 203 1219 7.14 434 402 114.5
D 4 250 1069 6.12 406 367 114.7
D 3 31 1031 5.79 406 367 114.7
D 8 176 1027 5.75 406 367 114.7

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