ASTROSAT CZTI

Data Quality Report

Orbit 42766

Creation date: 2024-06-27T22:43:58.991146
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_013T01_9000005822_42766cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42766cztM0_level2_quad_clean.evt
Size (bytes)297,527,04085,337,280
Size283.7 MB 81.4 MB
Events in quadrant A3,470,190565,634
Events in quadrant B2,309,432588,945
Events in quadrant C2,447,584567,149
Events in quadrant D2,404,900519,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133822
B0100592
C0100892
D0105352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48901703.476483%
B4890190.388548%
C489070.143149%
D4890340.695297%

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 6983 4891 138 138 1.98% 2.82%
B 6983 4891 12 12 0.17% 0.25%
C 6983 4891 4 4 0.06% 0.08%
D 6983 4891 30 30 0.43% 0.61%

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 13 248 587271 5167.97 554 543 113.5
A 10 83 520360 4578.61 554 543 113.5
A 15 223 176735 1551.92 554 543 113.5
B 0 229 62289 572.3 556 541 107.9
B 0 230 18817 169.39 556 541 107.9
B 5 255 15068 134.64 556 541 107.9
C 15 214 204650 1608.57 550 553 126.9
C 14 254 82599 646.64 550 553 126.9
C 3 233 7896 57.87 550 553 126.9
D 2 249 185818 1393.33 547 531 133.0
D 12 217 48100 357.71 547 531 133.0
D 12 6 25936 191.04 547 531 133.0

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