ASTROSAT CZTI

Data Quality Report

Orbit 19454

Creation date: 2024-06-27T18:03:04.615052
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/AS1A05_221T01_9000002888_19454cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19454cztM0_level2_quad_clean.evt
Size (bytes)284,437,44040,435,200
Size271.3 MB 38.6 MB
Events in quadrant A2,099,274245,583
Events in quadrant B2,173,110245,732
Events in quadrant C2,084,129232,646
Events in quadrant D1,998,251231,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084841
B087591
C084731
D082381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3800270.710526%
B3800591.552632%
C3800691.815789%
D3800140.368421%

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 3800 3800 4 4 0.11% 0.11%
B 3800 3800 18 18 0.47% 0.47%
C 3800 3800 13 13 0.34% 0.34%
D 3800 3800 0 0 0.00% 0.00%

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 4 2 54378 509.8 527 519 105.6
A 3 1 9277 82.9 527 519 105.6
A 13 254 5306 45.31 527 519 105.6
B 7 220 54710 550.97 517 505 98.4
B 3 64 33385 334.21 517 505 98.4
B 0 198 28166 281.16 517 505 98.4
C 0 207 85787 746.68 490 497 114.2
C 14 238 79602 692.53 490 497 114.2
C 9 221 6222 50.12 490 497 114.2
D 1 52 31448 249.9 509 496 123.9
D 9 1 20233 159.35 509 496 123.9
D 2 234 17644 138.45 509 496 123.9

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