ASTROSAT CZTI

Data Quality Report

Orbit 07900

Creation date: 2024-06-27T15:25:26.015155
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/AS1A02_158T01_9000001080_07900cztM0_level2.evt modeM0/AS1A02_158T01_9000001080_07900cztM0_level2_quad_clean.evt
Size (bytes)474,739,20087,056,640
Size452.7 MB 83.0 MB
Events in quadrant A2,970,914555,000
Events in quadrant B3,201,476567,829
Events in quadrant C3,955,386553,971
Events in quadrant D3,827,910525,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129202
B0136561
C0157911
D0153421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218420.675458%
B6218641.029270%
C6218620.997105%
D62181091.752975%

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 7403 6219 1 1 0.01% 0.02%
B 7403 6219 11 11 0.15% 0.18%
C 7403 6219 5 5 0.07% 0.08%
D 7403 6219 66 66 0.89% 1.06%

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 26126 165.81 755 740 153.1
A 15 239 17618 110.24 755 740 153.1
A 15 223 12259 75.24 755 740 153.1
B 5 255 105487 720.87 765 746 145.3
B 4 239 84410 575.81 765 746 145.3
B 4 81 16450 108.08 765 746 145.3
C 1 16 1072158 6253.18 734 738 171.3
C 9 68 17035 95.11 734 738 171.3
C 13 61 5706 28.99 734 738 171.3
D 1 20 912501 5154.79 725 703 176.9
D 1 52 104629 587.54 725 703 176.9
D 2 234 19110 104.06 725 703 176.9

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