ASTROSAT CZTI

Data Quality Report

Orbit 29890

Creation date: 2024-06-27T20:08:47.642147
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_102T12_9000004284_29890cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29890cztM0_level2_quad_clean.evt
Size (bytes)657,054,72069,644,160
Size626.6 MB 66.4 MB
Events in quadrant A3,654,226431,276
Events in quadrant B5,329,678431,191
Events in quadrant C6,387,725401,915
Events in quadrant D4,109,299411,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149602
B0197342
C0234782
D0165712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61991111.790611%
B61991852.984352%
C61986019.696676%
D61981201.936108%

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 7519 6200 2 2 0.03% 0.03%
B 7519 6200 6 6 0.08% 0.10%
C 7518 6199 128 128 1.70% 2.06%
D 7518 6199 41 41 0.55% 0.66%

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 8 192 26147 137.59 938 924 183.3
A 1 113 13228 67.12 938 924 183.3
A 13 254 10995 54.94 938 924 183.3
B 6 159 1679203 9735.41 918 900 172.4
B 0 229 48294 274.92 918 900 172.4
B 12 111 20172 111.79 918 900 172.4
C 3 233 2254256 11220.5 872 882 200.8
C 10 22 581277 2890.03 872 882 200.8
C 14 238 142471 705.03 872 882 200.8
D 8 195 389661 1863.28 905 887 208.7
D 2 250 70944 335.76 905 887 208.7
D 7 80 69585 329.25 905 887 208.7

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