ASTROSAT CZTI

Data Quality Report

Orbit 41099

Creation date: 2024-06-27T22:24:25.729206
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_032T01_9000005598_41099cztM0_level2.fits modeM0/AS1A12_032T01_9000005598_41099cztM0_level2_quad_clean.evt
Size (bytes)195,347,52059,057,280
Size186.3 MB 56.3 MB
Events in quadrant A1,860,963406,342
Events in quadrant B1,574,685413,046
Events in quadrant C1,804,826380,719
Events in quadrant D1,738,856360,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074281
B066401
C071321
D071671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A321370.217865%
B321340.124494%
C3213621.929661%
D3213220.684718%

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 3213 3213 1 1 0.03% 0.03%
B 3213 3213 0 0 0.00% 0.00%
C 3213 3213 52 52 1.62% 1.62%
D 3213 3213 19 19 0.59% 0.59%

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 304806 3765.39 390 382 80.8
A 13 248 31768 388.21 390 382 80.8
A 2 79 7129 83.45 390 382 80.8
B 0 186 51301 675.95 386 376 75.3
B 12 111 9209 117.24 386 376 75.3
B 11 111 8507 107.93 386 376 75.3
C 15 214 134434 1525.6 374 378 87.9
C 14 254 117354 1331.23 374 378 87.9
C 0 10 91331 1035.08 374 378 87.9
D 2 249 96337 1035.07 378 367 92.7
D 13 249 77611 833.11 378 367 92.7
D 1 52 49663 531.68 378 367 92.7

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