ASTROSAT CZTI

Data Quality Report

Orbit 08377

Creation date: 2024-06-27T15:31:50.031906
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/AS1G07_028T01_9000001166_08377cztM0_level2.evt modeM0/AS1G07_028T01_9000001166_08377cztM0_level2_quad_clean.evt
Size (bytes)239,558,40062,896,320
Size228.5 MB 60.0 MB
Events in quadrant A1,550,982419,443
Events in quadrant B2,194,053410,866
Events in quadrant C1,570,109422,197
Events in quadrant D1,698,720402,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071691
B089681
C072391
D076031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A352240.113572%
B35221875.309483%
C352240.113572%
D3522210.596252%

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 3522 3522 0 0 0.00% 0.00%
B 3522 3522 141 141 4.00% 4.00%
C 3522 3522 2 2 0.06% 0.06%
D 3522 3522 7 7 0.20% 0.20%

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 0 226 3564 37.72 402 394 84.0
A 12 194 3523 37.23 402 394 84.0
A 13 14 2904 29.86 402 394 84.0
B 10 16 419175 5387.12 398 388 77.7
B 4 81 170762 2191.63 398 388 77.7
B 0 219 24873 314.97 398 388 77.7
C 1 16 26005 274.41 396 399 93.3
C 13 61 2963 27.48 396 399 93.3
C 8 208 1121 7.74 396 399 93.3
D 12 221 120998 1187.22 387 379 101.6
D 1 52 21111 204.06 387 379 101.6
D 2 14 18389 177.27 387 379 101.6

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