ASTROSAT CZTI

Data Quality Report

Orbit 13025

Creation date: 2024-06-27T16:35:13.060043
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/AS1A04_216T01_9000001916_13025cztM0_level2.evt modeM0/AS1A04_216T01_9000001916_13025cztM0_level2_quad_clean.evt
Size (bytes)556,436,160103,809,600
Size530.7 MB 99.0 MB
Events in quadrant A3,235,162687,179
Events in quadrant B4,738,912684,760
Events in quadrant C3,095,090700,978
Events in quadrant D5,347,067622,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135233
B0182262
C0132382
D0200362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422240.373715%
B642269910.884460%
C6422330.513859%
D64224937.676736%

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 7673 6424 1 1 0.01% 0.02%
B 7673 6424 454 454 5.92% 7.07%
C 7673 6424 0 0 0.00% 0.00%
D 7673 6424 407 407 5.30% 6.34%

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 12 189 80928 501.7 790 773 159.8
A 15 223 32842 200.72 790 773 159.8
A 1 162 32108 196.13 790 773 159.8
B 4 239 1494568 10634.22 753 732 140.5
B 3 64 192353 1364.1 753 732 140.5
B 0 214 50606 355.04 753 732 140.5
C 13 61 5799 27.66 791 798 180.8
C 14 234 4932 22.86 791 798 180.8
C 12 4 3405 14.42 791 798 180.8
D 1 52 2470687 13853.84 747 727 178.3
D 8 195 44159 243.61 747 727 178.3
D 2 234 19218 103.71 747 727 178.3

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