ASTROSAT CZTI

Data Quality Report

Orbit 42894

Creation date: 2024-06-27T22:45:29.869555
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/AS1T05_143T01_9000005830_42894cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42894cztM0_level2_quad_clean.evt
Size (bytes)425,871,36084,360,960
Size406.1 MB 80.5 MB
Events in quadrant A3,443,454582,549
Events in quadrant B2,496,323617,251
Events in quadrant C5,519,474492,986
Events in quadrant D3,915,701510,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133862
B0108383
C0197342
D0151002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50062484.954055%
B5005210.419580%
C500596219.220779%
D50054198.371628%

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 7068 5007 205 205 2.90% 4.09%
B 7067 5006 14 14 0.20% 0.28%
C 7067 5006 974 974 13.78% 19.46%
D 7066 5005 404 404 5.72% 8.07%

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 564048 5033.35 546 536 112.0
A 15 237 537105 4792.7 546 536 112.0
A 13 248 155200 1381.48 546 536 112.0
B 0 229 158861 1505.65 556 542 105.1
B 4 171 53823 506.72 556 542 105.1
B 3 112 27351 254.96 556 542 105.1
C 12 2 3144037 26920.96 504 507 116.8
C 15 214 197850 1690.03 504 507 116.8
C 14 254 137325 1171.7 504 507 116.8
D 1 52 1203105 9218.35 529 513 130.5
D 12 6 251723 1925.63 529 513 130.5
D 13 249 150235 1147.68 529 513 130.5

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