ASTROSAT CZTI

Data Quality Report

Orbit 39046

Creation date: 2024-06-27T21:59:43.724425
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_077T06_9000005430_39046cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39046cztM0_level2_quad_clean.evt
Size (bytes)655,597,44079,035,840
Size625.2 MB 75.4 MB
Events in quadrant A14,446,33358,675
Events in quadrant B2,766,703680,564
Events in quadrant C2,883,147647,223
Events in quadrant D3,710,929593,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469273
B0123342
C0123712
D0154362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5919550593.005575%
B5919130.219632%
C5919220.371684%
D59191752.956581%

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 7232 5920 5383 5383 74.43% 90.93%
B 7232 5920 3 3 0.04% 0.05%
C 7232 5920 22 22 0.30% 0.37%
D 7232 5920 149 149 2.06% 2.52%

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 15 222 12630441 163482.34 375 367 77.3
A 10 83 262529 3393.4 375 367 77.3
A 13 210 62887 809.25 375 367 77.3
B 0 190 145689 1162.6 648 628 124.8
B 0 230 23349 182.1 648 628 124.8
B 5 172 17900 138.43 648 628 124.8
C 15 214 245812 1646.99 635 638 148.9
C 15 208 146036 976.73 635 638 148.9
C 14 254 4438 25.53 635 638 148.9
D 2 249 497547 3225.07 628 610 154.1
D 1 47 326192 2112.99 628 610 154.1
D 12 227 267418 1731.56 628 610 154.1

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