ASTROSAT CZTI

Data Quality Report

Orbit 18957

Creation date: 2024-06-27T17:57:04.141625
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_205T01_9000002824_18957cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18957cztM0_level2_quad_clean.evt
Size (bytes)561,723,840100,077,120
Size535.7 MB 95.4 MB
Events in quadrant A3,096,938665,952
Events in quadrant B5,169,244639,678
Events in quadrant C3,089,722656,817
Events in quadrant D5,222,151621,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132852
B0195742
C0131582
D0198392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400200.312500%
B64006309.843750%
C6400330.515625%
D64004416.890625%

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 7505 6401 2 2 0.03% 0.03%
B 7505 6401 350 350 4.66% 5.47%
C 7505 6401 0 0 0.00% 0.00%
D 7505 6401 317 317 4.22% 4.95%

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 14 235 89222 556.57 781 764 158.9
A 13 254 6783 37.87 781 764 158.9
A 0 226 6614 36.81 781 764 158.9
B 3 112 1922489 13287.75 754 734 144.6
B 0 189 160021 1101.37 754 734 144.6
B 7 220 93680 642.66 754 734 144.6
C 14 238 118046 654.48 761 766 179.2
C 13 61 5302 25.31 761 766 179.2
C 3 233 4354 20.02 761 766 179.2
D 7 238 2267538 12640.71 736 717 179.3
D 1 52 73284 404.66 736 717 179.3
D 12 218 46892 257.49 736 717 179.3

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