ASTROSAT CZTI

Data Quality Report

Orbit 06959

Creation date: 2024-06-27T15:13:43.914875
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_090T02_9000000956_06959cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06959cztM0_level2_quad_clean.evt
Size (bytes)440,907,84088,796,160
Size420.5 MB 84.7 MB
Events in quadrant A3,004,590561,192
Events in quadrant B3,106,275568,986
Events in quadrant C2,952,359565,804
Events in quadrant D3,847,665539,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132633
B0134102
C0132312
D0158742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6503620.953406%
B6503721.107181%
C6503400.615101%
D6503841.291712%

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 7588 6504 0 0 0.00% 0.00%
B 7588 6504 0 0 0.00% 0.00%
C 7588 6504 0 0 0.00% 0.00%
D 7588 6504 28 28 0.37% 0.43%

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 0 226 7561 43.14 777 760 157.6
A 13 248 7316 41.59 777 760 157.6
A 12 194 7308 41.54 777 760 157.6
B 0 219 30792 201.89 778 760 148.8
B 4 81 17517 112.65 778 760 148.8
B 0 228 15622 99.91 778 760 148.8
C 13 61 5868 29.28 753 760 174.4
C 8 128 5640 27.97 753 760 174.4
C 12 4 4196 19.7 753 760 174.4
D 8 195 674275 3644.79 752 729 184.8
D 12 221 91282 490.01 752 729 184.8
D 5 97 85217 457.19 752 729 184.8

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