ASTROSAT CZTI

Data Quality Report

Orbit 21779

Creation date: 2024-06-27T18:32:02.598332
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/AS1A07_005T01_9000003224_21779cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21779cztM0_level2_quad_clean.evt
Size (bytes)2,698,246,080270,063,360
Size2.5 GB 257.6 MB
Events in quadrant A11,462,9541,784,741
Events in quadrant B13,322,5931,799,015
Events in quadrant C11,592,7761,722,011
Events in quadrant D43,706,6141,202,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496936
B0545415
C0497025
D01465095

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242363211.324476%
B242377082.921154%
C242373781.559599%
D242371351755.770104%

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 27361 24238 0 0 0.00% 0.00%
B 27362 24240 290 290 1.06% 1.20%
C 27362 24240 1 1 0.00% 0.00%
D 27362 24237 11837 11837 43.26% 48.84%

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 13 254 44751 70.39 2968 2897 594.6
A 0 226 25655 38.28 2968 2897 594.6
A 3 137 24662 36.61 2968 2897 594.6
B 3 64 1203894 2164.81 2949 2877 554.8
B 0 190 150310 265.75 2949 2877 554.8
B 0 230 135706 239.42 2949 2877 554.8
C 14 238 444049 656.35 2853 2871 672.2
C 13 61 20058 25.57 2853 2871 672.2
C 10 23 15454 18.72 2853 2871 672.2
D 7 238 32984389 61968.12 2174 2106 532.2
D 1 52 1046128 1961.54 2174 2106 532.2
D 2 136 486546 910.18 2174 2106 532.2

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