ASTROSAT CZTI

Data Quality Report

Orbit 18128

Creation date: 2024-06-27T17:45:31.826597
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/AS1A05_186T01_9000002692_18128cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18128cztM0_level2_quad_clean.evt
Size (bytes)407,439,36069,511,680
Size388.6 MB 66.3 MB
Events in quadrant A2,645,307440,504
Events in quadrant B2,833,237444,350
Events in quadrant C2,675,801421,399
Events in quadrant D3,802,727405,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117253
B0122122
C0116892
D0150112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56121021.817534%
B56121282.280827%
C56131021.817210%
D56132344.168894%

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 5812 5614 0 0 0.00% 0.00%
B 5812 5614 9 9 0.15% 0.16%
C 5813 5615 0 0 0.00% 0.00%
D 5813 5615 163 163 2.80% 2.90%

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 15 174 7457 48.24 685 670 140.7
A 4 2 6040 38.17 685 670 140.7
A 0 226 5883 37.05 685 670 140.7
B 7 220 44961 331.52 681 661 133.6
B 4 216 29720 217.46 681 661 133.6
B 6 36 29330 214.55 681 661 133.6
C 14 238 100008 641.5 651 655 154.9
C 8 128 9745 58.69 651 655 154.9
C 0 207 8427 50.18 651 655 154.9
D 11 176 743112 4567.57 656 637 162.6
D 7 238 283976 1743.05 656 637 162.6
D 9 64 130207 797.09 656 637 162.6

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