ASTROSAT CZTI

Data Quality Report

Orbit 42880

Creation date: 2024-06-27T22:45:20.075157
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_42880cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42880cztM0_level2_quad_clean.evt
Size (bytes)324,829,44085,446,720
Size309.8 MB 81.5 MB
Events in quadrant A2,881,250581,398
Events in quadrant B2,460,820598,408
Events in quadrant C2,680,207571,278
Events in quadrant D3,619,123491,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116252
B0106842
C0110352
D0141982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4910651.323829%
B4910350.712831%
C4910460.936864%
D49104218.574338%

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 7002 4911 45 45 0.64% 0.92%
B 7002 4911 23 23 0.33% 0.47%
C 7002 4911 40 40 0.57% 0.81%
D 7002 4911 393 393 5.61% 8.00%

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 10 83 561718 5105.6 537 528 109.9
A 15 237 191551 1737.89 537 528 109.9
A 13 248 33411 299.16 537 528 109.9
B 3 112 77207 744.16 540 525 103.0
B 0 190 77006 742.2 540 525 103.0
B 0 229 69516 669.52 540 525 103.0
C 15 214 197386 1587.69 535 538 124.0
C 12 2 152337 1224.35 535 538 124.0
C 0 207 140024 1125.03 535 538 124.0
D 2 249 824871 6677.6 509 495 123.5
D 1 52 193151 1560.55 509 495 123.5
D 10 118 150644 1216.23 509 495 123.5

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