ASTROSAT CZTI

Data Quality Report

Orbit 04684

Creation date: 2024-06-27T14:45:34.496921
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/AS1G05_251T02_9000000588_04684cztM0_level2.evt modeM0/AS1G05_251T02_9000000588_04684cztM0_level2_quad_clean.evt
Size (bytes)2,138,034,240372,888,000
Size2.0 GB 355.6 MB
Events in quadrant A11,090,7692,472,858
Events in quadrant B12,124,8172,457,817
Events in quadrant C11,028,5292,514,001
Events in quadrant D28,822,2272,130,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0515027
B0529767
C05146213
D010310433

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249635842.339462%
B249636122.451628%
C249604691.879006%
D24960602124.122596%

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 26544 24967 12 12 0.05% 0.05%
B 26544 24969 31 31 0.12% 0.12%
C 26544 24969 16 16 0.06% 0.06%
D 26544 24969 4634 4634 17.46% 18.56%

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 14 111 131709 226.29 2794 2724 570.0
A 8 15 55105 91.9 2794 2724 570.0
A 12 133 49024 81.23 2794 2724 570.0
B 15 204 628240 1164.5 2817 2745 537.1
B 10 16 296775 547.4 2817 2745 537.1
B 15 54 92191 166.52 2817 2745 537.1
C 9 247 97391 149.57 2743 2751 632.8
C 14 48 91645 140.49 2743 2751 632.8
C 1 16 68212 103.45 2743 2751 632.8
D 2 63 9015593 15314.06 2470 2392 588.6
D 13 235 8168048 13874.02 2470 2392 588.6
D 9 82 1200124 2035.03 2470 2392 588.6

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