ASTROSAT CZTI

Data Quality Report

Orbit 13287

Creation date: 2024-06-27T16:38:49.255614
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_013T01_9000001976_13287cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13287cztM0_level2_quad_clean.evt
Size (bytes)682,833,60084,746,880
Size651.2 MB 80.8 MB
Events in quadrant A3,316,889644,158
Events in quadrant B9,046,195270,167
Events in quadrant C3,236,289641,200
Events in quadrant D4,666,684583,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137343
B0309022
C0133412
D0178812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104510.835518%
B6104334154.734600%
C6104540.884666%
D61042974.865662%

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 7460 6106 0 0 0.00% 0.00%
B 7460 6103 2132 2132 28.58% 34.93%
C 7460 6106 25 25 0.34% 0.41%
D 7460 6106 232 232 3.11% 3.80%

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 8 15 191234 1176.54 801 789 161.9
A 1 162 19529 115.77 801 789 161.9
A 9 143 8679 48.74 801 789 161.9
B 4 239 7046665 77352.37 485 475 91.1
B 3 209 24519 263.95 485 475 91.1
B 0 244 17847 190.71 485 475 91.1
C 14 234 135919 744.45 782 790 181.5
C 15 208 48800 264.5 782 790 181.5
C 13 61 5544 26.19 782 790 181.5
D 13 249 514194 2814.47 759 738 182.4
D 13 104 467084 2556.24 759 738 182.4
D 14 34 436317 2387.59 759 738 182.4

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