ASTROSAT CZTI

Data Quality Report

Orbit 47904

Creation date: 2024-08-20T14:43:30.957050
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/AS1A09_038T36_9000006374_47904cztM0_level2.fits modeM0/AS1A09_038T36_9000006374_47904cztM0_level2_quad_clean.evt
Size (bytes)1,018,941,120223,341,120
Size971.7 MB 213.0 MB
Events in quadrant A14,774,7471,447,782
Events in quadrant B6,579,4481,498,137
Events in quadrant C6,168,2021,500,248
Events in quadrant D9,073,7281,314,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546472
B0302833
C0297332
D0375562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145006454.448276%
B144993642.510518%
C145001671.151724%
D145017675.289290%

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 14989 14501 33 33 0.22% 0.23%
B 14989 14501 8 8 0.05% 0.06%
C 14989 14501 1 1 0.01% 0.01%
D 14991 14503 460 460 3.07% 3.17%

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 10 83 8332782 25635.45 1560 1525 325.0
A 13 248 172103 524.87 1560 1525 325.0
A 0 31 143264 436.13 1560 1525 325.0
B 0 200 77318 250.79 1562 1513 302.3
B 15 19 72990 236.47 1562 1513 302.3
B 4 171 63495 205.06 1562 1513 302.3
C 12 2 37094 97.4 1559 1566 364.7
C 14 254 34575 90.5 1559 1566 364.7
C 13 61 10543 24.61 1559 1566 364.7
D 13 29 1065807 2773.58 1538 1492 383.7
D 2 37 784599 2040.76 1538 1492 383.7
D 10 204 414907 1077.35 1538 1492 383.7

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