ASTROSAT CZTI

Data Quality Report

Orbit 03487

Creation date: 2024-06-27T14:29:38.760502
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_211T01_9000000464_03487cztM0_level2.evt modeM0/AS1G05_211T01_9000000464_03487cztM0_level2_quad_clean.evt
Size (bytes)518,860,80087,906,240
Size494.8 MB 83.8 MB
Events in quadrant A3,027,722569,713
Events in quadrant B4,298,200564,424
Events in quadrant C4,687,069545,761
Events in quadrant D3,273,454542,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133263
B0170932
C0181772
D0142112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298711.127342%
B62981542.445221%
C62985859.288663%
D62981151.825977%

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 7568 6299 0 0 0.00% 0.00%
B 7568 6299 54 54 0.71% 0.86%
C 7568 6299 441 441 5.83% 7.00%
D 7568 6298 62 62 0.82% 0.98%

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 0 118 28860 179.58 772 758 156.5
A 0 226 10615 62.99 772 758 156.5
A 12 194 8415 48.93 772 758 156.5
B 8 3 556962 3769.46 773 755 147.6
B 15 204 366465 2478.45 773 755 147.6
B 15 85 270860 1830.53 773 755 147.6
C 7 220 1569268 9385.04 722 727 167.1
C 1 192 195903 1167.8 722 727 167.1
C 1 16 69084 409.0 722 727 167.1
D 13 239 104206 571.97 750 729 180.9
D 14 34 99863 547.97 750 729 180.9
D 10 172 56839 310.15 750 729 180.9

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