ASTROSAT CZTI

Data Quality Report

Orbit 14170

Creation date: 2024-06-27T16:51:36.570215
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/AS1G08_024T02_9000002094_14170cztM0_level2.evt modeM0/AS1G08_024T02_9000002094_14170cztM0_level2_quad_clean.evt
Size (bytes)491,299,20070,352,640
Size468.5 MB 67.1 MB
Events in quadrant A3,359,852416,881
Events in quadrant B3,613,786421,263
Events in quadrant C3,390,125438,705
Events in quadrant D4,094,339420,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137317
B0146832
C0135662
D0170612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62051031.659952%
B62071352.174964%
C6207751.208313%
D6207901.449976%

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 7493 6208 0 0 0.00% 0.00%
B 7493 6209 1 1 0.01% 0.02%
C 7493 6209 0 0 0.00% 0.00%
D 7493 6209 3 3 0.04% 0.05%

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 16763 92.08 865 849 172.8
A 12 189 9763 51.58 865 849 172.8
A 0 226 7744 39.89 865 849 172.8
B 0 85 232825 1437.49 858 841 161.4
B 12 111 18920 112.03 858 841 161.4
B 11 111 16221 95.3 858 841 161.4
C 3 233 109245 566.83 841 851 191.2
C 13 61 6046 27.17 841 851 191.2
C 14 234 2768 10.02 841 851 191.2
D 8 195 525701 2649.21 841 823 198.1
D 1 52 302418 1522.23 841 823 198.1
D 10 157 39898 197.22 841 823 198.1

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