ASTROSAT CZTI

Data Quality Report

Orbit 20210430_A10_071T16_9000004348_level2

Creation date: 2021-05-10T09:10:57.357783
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_071T16_9000004348cztM0_level2_bc.evt modeM0/AS1A10_071T16_9000004348cztM0_level2_quad_clean.evt
Size (bytes)1,704,418,560475,381,440
Size1.6 GB 453.4 MB
Events in quadrant A7,571,5463,051,747
Events in quadrant B17,329,5233,059,941
Events in quadrant C8,725,1262,938,337
Events in quadrant D15,514,3172,849,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0756700
B01099160
C0801480
D0993730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07420
B07420
C07420
D07420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A364055351.469578%
B364058172.244197%
C364057842.153550%
D3640514864.081857%

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 42040 36401 0 0 0.00% 0.00%
B 42040 36400 0 0 0.00% 0.00%
C 42040 36402 2 2 0.00% 0.01%
D 42040 36397 495 495 1.18% 1.36%

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 78069 181.25 1939 1904 420.2
A 13 254 62674 144.61 1939 1904 420.2
A 0 226 11990 24.0 1939 1904 420.2
B 6 159 9765650 26270.8 1949 1896 371.7
B 0 190 49699 128.62 1949 1896 371.7
B 10 247 26121 65.18 1949 1896 371.7
C 3 233 1351414 3053.17 1867 1859 442.0
C 15 208 97707 216.84 1867 1859 442.0
C 2 114 69378 152.75 1867 1859 442.0
D 1 52 4143497 9484.09 1867 1815 436.7
D 7 223 1385878 3169.38 1867 1815 436.7
D 8 195 1212295 2771.89 1867 1815 436.7

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