ASTROSAT CZTI

Data Quality Report

Orbit 37756

Creation date: 2024-06-27T21:44:02.134542
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/AS1A11_106T02_9000005344_37756cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37756cztM0_level2_quad_clean.evt
Size (bytes)497,649,60078,598,080
Size474.6 MB 75.0 MB
Events in quadrant A4,561,286495,248
Events in quadrant B2,775,686507,558
Events in quadrant C3,042,944514,070
Events in quadrant D4,318,469478,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171513
B0118692
C0124242
D0166252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549192416.827536%
B5491330.600983%
C5491991.802950%
D54915339.706793%

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 7074 5492 334 334 4.72% 6.08%
B 7074 5492 27 27 0.38% 0.49%
C 7074 5492 88 88 1.24% 1.60%
D 7074 5492 490 490 6.93% 8.92%

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 15 222 2094578 19869.49 517 508 105.4
A 10 83 249821 2365.59 517 508 105.4
A 9 143 121341 1146.51 517 508 105.4
B 4 81 96257 822.04 606 591 116.4
B 5 255 75425 643.03 606 591 116.4
B 0 229 58615 498.59 606 591 116.4
C 15 214 229592 1649.69 598 603 138.8
C 0 10 210498 1512.13 598 603 138.8
C 0 207 183902 1320.53 598 603 138.8
D 2 250 722852 5237.03 567 553 137.9
D 13 249 722594 5235.16 567 553 137.9
D 7 223 266928 1931.35 567 553 137.9

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