ASTROSAT CZTI

Data Quality Report

Orbit 00999

Creation date: 2024-06-27T14:05:56.334567
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/AS1P01_998T02_9000000190_00999cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_00999cztM0_level2_quad_clean.evt
Size (bytes)1,001,433,600109,376,640
Size955.0 MB 104.3 MB
Events in quadrant A7,382,565734,991
Events in quadrant B7,612,010737,173
Events in quadrant C7,354,936713,296
Events in quadrant D7,577,841704,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262765
B0269031
C0261331
D0267951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6058841.386596%
B6058691.138990%
C6058330.544734%
D6058460.759327%

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 7258 6059 323 323 4.45% 5.33%
B 7258 6059 285 285 3.93% 4.70%
C 7258 6059 205 205 2.82% 3.38%
D 7258 6059 377 377 5.19% 6.22%

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 211064 466.9 1863 1874 448.0
A 12 243 12551 23.83 1863 1874 448.0
A 11 79 8310 14.36 1863 1874 448.0
B 5 249 95862 207.42 1930 1933 452.8
B 5 6 51528 109.52 1930 1933 452.8
B 15 85 35318 73.72 1930 1933 452.8
C 15 241 303162 608.22 1788 1844 495.4
C 3 79 33106 63.1 1788 1844 495.4
C 3 111 28340 53.48 1788 1844 495.4
D 1 4 959330 1806.01 1756 1815 530.2
D 13 85 22644 39.29 1756 1815 530.2
D 12 22 16101 26.95 1756 1815 530.2

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