ASTROSAT CZTI

Data Quality Report

Orbit 42199

Creation date: 2024-06-27T22:38:25.392819
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/AS1A12_088T59_9000005774_42199cztM0_level2.fits modeM0/AS1A12_088T59_9000005774_42199cztM0_level2_quad_clean.evt
Size (bytes)330,333,12083,603,520
Size315.0 MB 79.7 MB
Events in quadrant A2,774,569581,213
Events in quadrant B2,434,398594,943
Events in quadrant C2,244,894556,401
Events in quadrant D4,404,388466,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111262
B0104202
C095912
D0163862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4742330.695909%
B4742160.337410%
C474240.084353%
D474251010.754956%

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 6834 4743 13 13 0.19% 0.27%
B 6834 4743 8 8 0.12% 0.17%
C 6834 4743 0 0 0.00% 0.00%
D 6834 4743 513 513 7.51% 10.82%

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 547162 4911.91 544 535 111.3
A 15 223 66576 593.44 544 535 111.3
A 13 248 28847 254.41 544 535 111.3
B 0 229 217440 2070.76 542 529 104.7
B 5 255 23503 219.32 542 529 104.7
B 7 202 23339 217.76 542 529 104.7
C 15 214 199339 1636.21 521 525 121.5
C 0 207 6186 46.59 521 525 121.5
C 7 247 4059 29.08 521 525 121.5
D 1 52 1229715 10039.54 493 477 122.4
D 12 233 605460 4941.07 493 477 122.4
D 1 47 381509 3112.0 493 477 122.4

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