ASTROSAT CZTI

Data Quality Report

Orbit 22864

Creation date: 2024-06-27T18:46:44.579896
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/AS1A07_054T01_9000003378_22864cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22864cztM0_level2_quad_clean.evt
Size (bytes)1,349,873,280331,148,160
Size1.3 GB 315.8 MB
Events in quadrant A8,346,6742,268,725
Events in quadrant B8,407,4022,267,607
Events in quadrant C8,221,9222,176,252
Events in quadrant D14,692,4082,080,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368632
B0371322
C0365532
D0562573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17949420.233996%
B17950760.423398%
C179501510.841226%
D1794913407.465597%

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 20069 17952 0 0 0.00% 0.00%
B 20070 17953 5 5 0.02% 0.03%
C 20070 17953 1 1 0.00% 0.01%
D 20069 17952 1100 1100 5.48% 6.13%

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 11 47 168976 398.31 2102 2056 419.1
A 13 252 42853 97.35 2102 2056 419.1
A 13 254 30544 67.98 2102 2056 419.1
B 0 189 76921 190.19 2089 2035 393.7
B 0 190 68813 169.6 2089 2035 393.7
B 12 111 47900 116.49 2089 2035 393.7
C 14 238 316495 668.53 2016 2025 470.4
C 10 22 28196 55.64 2016 2025 470.4
C 7 247 16794 31.4 2016 2025 470.4
D 7 238 4647433 9673.55 1996 1943 480.2
D 1 52 1345172 2797.08 1996 1943 480.2
D 1 239 344985 714.33 1996 1943 480.2

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