ASTROSAT CZTI

Data Quality Report

Orbit 13897

Creation date: 2024-06-27T16:47:35.634305
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_010T02_9000002048_13897cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13897cztM0_level2_quad_clean.evt
Size (bytes)458,363,52090,432,000
Size437.1 MB 86.2 MB
Events in quadrant A3,139,406574,765
Events in quadrant B3,252,614582,460
Events in quadrant C3,287,307571,662
Events in quadrant D3,749,966545,706

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137693
B0140202
C0139012
D0157072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6659230.345397%
B6659500.750863%
C6659110.165190%
D6659761.141313%

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 9030 6662 0 0 0.00% 0.00%
B 9030 6662 11 11 0.12% 0.17%
C 9030 6662 0 0 0.00% 0.00%
D 9030 6662 67 67 0.74% 1.01%

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 1 162 15037 85.7 811 794 166.2
A 0 226 7235 38.76 811 794 166.2
A 12 194 6128 32.1 811 794 166.2
B 4 80 52359 334.59 810 789 154.1
B 12 111 18709 116.27 810 789 154.1
B 11 111 15729 96.93 810 789 154.1
C 3 233 213873 1159.58 788 793 183.8
C 13 61 5604 26.18 788 793 183.8
C 12 4 3742 16.05 788 793 183.8
D 1 52 505363 2744.15 774 756 183.9
D 13 189 83044 447.5 774 756 183.9
D 10 157 57980 311.2 774 756 183.9

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