ASTROSAT CZTI

Data Quality Report

Orbit 25355

Creation date: 2024-06-27T19:16:43.127226
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_059T01_9000003706_25355cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25355cztM0_level2_quad_clean.evt
Size (bytes)502,462,08081,564,480
Size479.2 MB 77.8 MB
Events in quadrant A3,843,364509,753
Events in quadrant B3,673,793516,277
Events in quadrant C3,307,304491,622
Events in quadrant D3,932,265479,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158610
B0151230
C0140080
D0159960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6783500.737137%
B6784650.958137%
C6784640.943396%
D6784871.282429%

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 8723 6785 0 0 0.00% 0.00%
B 8724 6786 2 2 0.02% 0.03%
C 8724 6785 1 1 0.01% 0.01%
D 8724 6786 55 55 0.63% 0.81%

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 6 16 545171 3220.6 846 827 169.0
A 15 173 28972 166.52 846 827 169.0
A 13 254 10889 59.53 846 827 169.0
B 3 112 163977 1013.76 841 819 160.9
B 7 219 109113 672.87 841 819 160.9
B 7 235 45269 276.18 841 819 160.9
C 14 238 130382 684.05 807 814 189.4
C 9 54 20943 106.27 807 814 189.4
C 3 233 11333 55.53 807 814 189.4
D 1 52 350610 1774.63 816 792 197.1
D 8 195 239734 1212.16 816 792 197.1
D 9 35 170216 859.49 816 792 197.1

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