ASTROSAT CZTI

Data Quality Report

Orbit 20210513_C05_019T04_9000004376_level2

Creation date: 2021-05-17T20:07:56.644050
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/AS1C05_019T04_9000004376cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000004376cztM0_level2_quad_clean.evt
Size (bytes)4,474,563,8401,553,880,960
Size4.2 GB 1.4 GB
Events in quadrant A24,832,98210,288,549
Events in quadrant B49,794,19810,302,866
Events in quadrant C22,161,24910,125,005
Events in quadrant D32,160,7789,731,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019680
B019680
C019680
D019680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140630
B02971860
C02092000
D02443850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9659817251.785751%
B9659819882.058014%
C9659822082.285762%
D9659840964.240253%

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 112188 96588 232 232 0.21% 0.24%
B 112188 96583 23 23 0.02% 0.02%
C 112188 96583 25 25 0.02% 0.03%
D 112188 96585 81 81 0.07% 0.08%

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 2475332 2224.01 5179 5110 1110.7
A 0 13 2004901 1800.47 5179 5110 1110.7
A 8 192 212282 186.52 5179 5110 1110.7
B 6 159 26767495 27212.75 5214 5107 983.5
B 0 229 1898702 1925.46 5214 5107 983.5
B 4 80 549192 553.24 5214 5107 983.5
C 3 233 1579698 1313.46 5051 5044 1198.9
C 10 22 488422 403.2 5051 5044 1198.9
C 15 208 320605 263.22 5051 5044 1198.9
D 13 104 4343135 3422.92 5044 4922 1267.4
D 8 195 2842260 2238.71 5044 4922 1267.4
D 13 249 2767629 2179.82 5044 4922 1267.4

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