ASTROSAT CZTI

Data Quality Report

Orbit 04930

Creation date: 2024-06-27T14:48:58.885271
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/AS1G05_118T01_9000000622_04930cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04930cztM0_level2_quad_clean.evt
Size (bytes)1,223,562,240186,552,000
Size1.1 GB 177.9 MB
Events in quadrant A7,052,5111,152,515
Events in quadrant B7,514,9921,168,647
Events in quadrant C10,448,5981,144,131
Events in quadrant D10,980,5221,102,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323513
B0332113
C0422283
D0438193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156721390.886932%
B156721490.950740%
C156728755.583206%
D156729866.291475%

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 17437 15675 36 36 0.21% 0.23%
B 17437 15674 50 50 0.29% 0.32%
C 17437 15674 697 697 4.00% 4.45%
D 17437 15673 772 772 4.43% 4.93%

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 31 259545 727.51 1742 1699 354.4
A 15 31 24807 65.2 1742 1699 354.4
A 0 50 24584 64.57 1742 1699 354.4
B 10 16 482289 1433.42 1762 1719 335.3
B 15 54 67165 195.21 1762 1719 335.3
B 15 204 66944 194.55 1762 1719 335.3
C 9 247 3802124 9799.24 1686 1694 387.8
C 1 16 52379 130.69 1686 1694 387.8
C 13 61 13675 30.89 1686 1694 387.8
D 2 33 1951544 4765.44 1677 1622 409.2
D 12 233 672984 1640.75 1677 1622 409.2
D 12 22 479863 1168.78 1677 1622 409.2

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