ASTROSAT CZTI

Data Quality Report

Orbit 20210505_A10_071T17_9000004352_level2

Creation date: 2021-05-17T19:08:12.704125
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/AS1A10_071T17_9000004352cztM0_level2_bc.evt modeM0/AS1A10_071T17_9000004352cztM0_level2_quad_clean.evt
Size (bytes)2,085,865,920637,752,960
Size1.9 GB 608.2 MB
Events in quadrant A10,315,2704,100,419
Events in quadrant B23,408,8124,126,273
Events in quadrant C10,377,7513,919,171
Events in quadrant D15,744,9563,821,262

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01015020
B01480930
C01042720
D01207980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09960
B09960
C09960
D09960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487866631.358996%
B4878611192.293691%
C4878617073.498955%
D4878617543.595294%

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 59126 48783 0 0 0.00% 0.00%
B 59126 48784 0 0 0.00% 0.00%
C 59126 48780 2 2 0.00% 0.00%
D 59126 48782 109 109 0.18% 0.22%

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 14 239 126003 220.22 2614 2570 560.5
A 8 192 98470 171.1 2614 2570 560.5
A 13 254 81742 141.25 2614 2570 560.5
B 6 159 12983458 25929.71 2640 2578 500.6
B 6 36 192601 379.58 2640 2578 500.6
B 0 190 121731 238.01 2640 2578 500.6
C 3 233 317392 535.47 2507 2498 588.1
C 10 22 170759 286.12 2507 2498 588.1
C 14 254 125924 209.88 2507 2498 588.1
D 13 104 1918987 3207.97 2518 2452 597.4
D 8 195 1319331 2204.24 2518 2452 597.4
D 1 52 1161794 1940.55 2518 2452 597.4

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