ASTROSAT CZTI

Data Quality Report

Orbit 15521

Creation date: 2024-06-27T17:09:47.115876
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/AS1T02_085T01_9000002296_15521cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15521cztM0_level2_quad_clean.evt
Size (bytes)569,004,48085,789,440
Size542.6 MB 81.8 MB
Events in quadrant A3,963,307522,083
Events in quadrant B3,889,265526,390
Events in quadrant C4,158,079509,300
Events in quadrant D4,699,048504,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166293
B0165192
C0169112
D0193342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77061952.530496%
B77062252.919803%
C77061952.530496%
D77062152.790034%

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 7837 7707 3 3 0.04% 0.04%
B 7837 7708 10 10 0.13% 0.13%
C 7837 7708 0 0 0.00% 0.00%
D 7837 7708 102 102 1.30% 1.32%

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 0 253 271282 1427.01 931 910 189.5
A 14 238 88095 460.16 931 910 189.5
A 14 237 15726 78.2 931 910 189.5
B 4 142 75957 423.79 929 904 177.1
B 0 189 38890 214.49 929 904 177.1
B 0 197 28362 155.04 929 904 177.1
C 3 233 532202 2562.13 888 893 207.4
C 14 238 135304 648.17 888 893 207.4
C 0 207 9530 41.65 888 893 207.4
D 5 222 913363 4057.46 905 875 224.9
D 7 38 213206 944.15 905 875 224.9
D 12 221 74777 328.61 905 875 224.9

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