ASTROSAT CZTI

Data Quality Report

Orbit 20491

Creation date: 2024-06-27T18:16:14.743258
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/AS1A05_176T03_9000003028_20491cztM0_level2.evt modeM0/AS1A05_176T03_9000003028_20491cztM0_level2_quad_clean.evt
Size (bytes)155,799,36031,072,320
Size148.6 MB 29.6 MB
Events in quadrant A759,991214,617
Events in quadrant B999,756212,603
Events in quadrant C789,164205,291
Events in quadrant D2,051,820183,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034070
B041100
C034460
D072650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169410.059032%
B1695130.766962%
C169540.235988%
D169533419.705015%

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 1694 1694 0 0 0.00% 0.00%
B 1695 1695 7 7 0.41% 0.41%
C 1695 1695 0 0 0.00% 0.00%
D 1694 1694 352 352 20.78% 20.78%

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 12 96 7083 164.71 194 190 41.9
A 5 203 4906 112.69 194 190 41.9
A 0 226 1707 36.25 194 190 41.9
B 0 197 99473 2602.22 191 186 38.2
B 0 189 80010 2092.11 191 186 38.2
B 0 190 45457 1186.51 191 186 38.2
C 3 233 33927 756.08 186 187 44.6
C 14 238 28317 630.37 186 187 44.6
C 13 61 1357 26.22 186 187 44.6
D 7 38 929905 20936.11 177 173 44.4
D 12 218 101487 2281.43 177 173 44.4
D 7 238 95846 2154.41 177 173 44.4

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