ASTROSAT CZTI

Data Quality Report

Orbit 06885

Creation date: 2024-06-27T15:12:44.428909
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_005T01_9000000948_06885cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06885cztM0_level2_quad_clean.evt
Size (bytes)387,339,84073,609,920
Size369.4 MB 70.2 MB
Events in quadrant A2,746,499459,717
Events in quadrant B2,805,477459,945
Events in quadrant C3,040,862451,455
Events in quadrant D2,735,534445,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120732
B0121691
C0129351
D0121951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908590.998646%
B5908520.880162%
C5908911.540284%
D5908480.812458%

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 6973 5909 0 0 0.00% 0.00%
B 6973 5909 0 0 0.00% 0.00%
C 6973 5909 38 38 0.54% 0.64%
D 6973 5909 5 5 0.07% 0.08%

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 8 15 37902 260.79 701 687 142.7
A 0 226 6738 42.4 701 687 142.7
A 12 194 6620 41.57 701 687 142.7
B 4 48 29191 211.59 698 680 134.7
B 4 81 21118 151.68 698 680 134.7
B 0 219 20198 144.85 698 680 134.7
C 9 247 416207 2666.82 670 674 155.8
C 13 61 5255 29.4 670 674 155.8
C 1 3 3385 17.4 670 674 155.8
D 8 195 58629 347.48 680 657 166.8
D 13 169 53270 315.36 680 657 166.8
D 2 152 16487 94.89 680 657 166.8

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