ASTROSAT CZTI

Data Quality Report

Orbit 21647

Creation date: 2024-06-27T18:30:37.321404
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/AS1A06_002T02_9000003206_21647cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21647cztM0_level2_quad_clean.evt
Size (bytes)896,575,680170,331,840
Size855.0 MB 162.4 MB
Events in quadrant A5,775,7461,101,617
Events in quadrant B6,237,0161,116,905
Events in quadrant C5,737,7311,071,443
Events in quadrant D8,571,9101,020,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254552
B0262612
C0250652
D0339022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122791501.221598%
B122801551.262215%
C122801841.498371%
D122804843.941368%

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 13389 12281 9 9 0.07% 0.07%
B 13390 12282 10 10 0.07% 0.08%
C 13390 12282 1 1 0.01% 0.01%
D 13390 12282 350 350 2.61% 2.85%

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 15 236 136890 460.28 1462 1426 294.3
A 13 254 16771 52.14 1462 1426 294.3
A 3 137 12648 38.13 1462 1426 294.3
B 3 64 202286 715.54 1461 1421 280.7
B 0 245 124693 439.13 1461 1421 280.7
B 0 229 57127 198.44 1461 1421 280.7
C 14 238 223896 674.07 1411 1420 330.1
C 13 61 9821 25.45 1411 1420 330.1
C 10 22 9002 22.97 1411 1420 330.1
D 7 238 2364585 6871.8 1413 1368 343.9
D 13 104 312058 903.43 1413 1368 343.9
D 2 136 233010 673.57 1413 1368 343.9

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