ASTROSAT CZTI

Data Quality Report

Orbit 38391

Creation date: 2024-06-27T21:52:06.729361
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/AS1A12_025T09_9000005382_38391cztM0_level2.fits modeM0/AS1A12_025T09_9000005382_38391cztM0_level2_quad_clean.evt
Size (bytes)194,169,60040,812,480
Size185.2 MB 38.9 MB
Events in quadrant A1,282,715284,228
Events in quadrant B1,409,792287,479
Events in quadrant C1,159,328272,838
Events in quadrant D3,153,618224,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051982
B056611
C047611
D0108411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2317160.690548%
B2317572.460078%
C231770.302115%
D231734314.803625%

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 4440 2318 4 4 0.09% 0.17%
B 4440 2318 21 21 0.47% 0.91%
C 4440 2318 5 5 0.11% 0.22%
D 4440 2318 413 413 9.30% 17.82%

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 179963 3238.58 269 265 55.5
A 9 143 34169 611.03 269 265 55.5
A 12 16 11489 202.28 269 265 55.5
B 4 21 235184 4495.9 267 260 52.3
B 0 183 68110 1298.49 267 260 52.3
B 4 171 17949 338.53 267 260 52.3
C 15 214 100038 1590.59 264 265 62.7
C 0 10 21207 333.86 264 265 62.7
C 14 254 5127 77.51 264 265 62.7
D 10 203 1331614 21068.53 253 246 63.2
D 1 20 412035 6516.45 253 246 63.2
D 2 16 321591 5085.2 253 246 63.2

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