ASTROSAT CZTI

Data Quality Report

Orbit 26178

Creation date: 2024-06-27T19:25:43.175657
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/AS1A09_138T04_9000003776_26178cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26178cztM0_level2_quad_clean.evt
Size (bytes)817,395,840143,614,080
Size779.5 MB 137.0 MB
Events in quadrant A5,323,004906,271
Events in quadrant B5,630,919922,558
Events in quadrant C5,458,039877,544
Events in quadrant D7,574,862857,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231280
B0239600
C0232960
D0299340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113461141.004759%
B113472061.815458%
C113471561.374813%
D113474574.027496%

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 11846 11347 0 0 0.00% 0.00%
B 11847 11348 56 56 0.47% 0.49%
C 11847 11348 0 0 0.00% 0.00%
D 11847 11348 366 366 3.09% 3.23%

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 13 254 18862 63.59 1372 1344 275.5
A 11 29 15171 50.19 1372 1344 275.5
A 3 137 12925 42.04 1372 1344 275.5
B 5 172 237749 909.41 1357 1324 260.0
B 0 230 46057 172.07 1357 1324 260.0
B 12 111 31680 116.76 1357 1324 260.0
C 14 238 209534 668.9 1319 1330 311.3
C 3 233 109279 346.81 1319 1330 311.3
C 13 61 8975 24.56 1319 1330 311.3
D 1 52 2372908 7561.82 1322 1294 313.6
D 12 233 130545 412.11 1322 1294 313.6
D 2 234 56681 176.6 1322 1294 313.6

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