ASTROSAT CZTI

Data Quality Report

Orbit 35149

Creation date: 2022-03-30T01:53:36.072628
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/AS1A11_069T01_9000005034_35149cztM0_level2.evt modeM0/AS1A11_069T01_9000005034_35149cztM0_level2_quad_clean.evt
Size (bytes)435,363,84032,564,160
Size415.2 MB 31.1 MB
Events in quadrant A4,776,482172,781
Events in quadrant B3,043,713183,424
Events in quadrant C1,975,681189,584
Events in quadrant D3,143,208182,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166702
B0115031
C079601
D0119231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A362096226.574586%
B362041711.519337%
C3620742.044199%
D36201213.342541%

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 5473 3621 560 560 10.23% 15.47%
B 5473 3621 251 251 4.59% 6.93%
C 5473 3621 50 50 0.91% 1.38%
D 5473 3621 104 104 1.90% 2.87%

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 15 169 3181465 39483.63 396 389 80.6
A 10 83 40198 494.11 396 389 80.6
A 9 143 14187 171.26 396 389 80.6
B 5 236 1189634 15183.68 404 393 78.3
B 5 172 182024 2318.98 404 393 78.3
B 4 232 40794 515.82 404 393 78.3
C 0 10 181244 1849.53 413 416 97.8
C 15 214 149211 1521.9 413 416 97.8
C 9 69 12185 120.37 413 416 97.8
D 8 195 916636 9050.87 410 399 101.2
D 13 249 251403 2479.49 410 399 101.2
D 2 250 224361 2212.36 410 399 101.2

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