ASTROSAT CZTI

Data Quality Report

Orbit 06760

Creation date: 2024-06-27T15:11:22.530328
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_006T01_9000000934_06760cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06760cztM0_level2_quad_clean.evt
Size (bytes)508,610,88086,627,520
Size485.0 MB 82.6 MB
Events in quadrant A2,999,815558,792
Events in quadrant B3,023,794569,265
Events in quadrant C2,855,980550,476
Events in quadrant D6,091,346499,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133053
B0132902
C0130992
D0224842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6381360.564175%
B6381380.595518%
C6381140.219401%
D63814156.503683%

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 7636 6382 2 2 0.03% 0.03%
B 7636 6382 0 0 0.00% 0.00%
C 7636 6382 0 0 0.00% 0.00%
D 7636 6382 339 339 4.44% 5.31%

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 13 251 56264 362.2 756 743 153.3
A 13 248 15400 95.62 756 743 153.3
A 8 15 11299 68.86 756 743 153.3
B 0 214 16486 107.65 768 752 146.2
B 12 111 14249 92.35 768 752 146.2
B 4 81 12941 83.4 768 752 146.2
C 13 61 5621 28.77 729 733 169.9
C 12 4 5325 27.03 729 733 169.9
C 14 67 2768 11.98 729 733 169.9
D 12 220 2665476 15302.86 709 685 174.1
D 2 152 370494 2123.67 709 685 174.1
D 8 195 192321 1100.49 709 685 174.1

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