ASTROSAT CZTI

Data Quality Report

Orbit 41964

Creation date: 2024-06-27T22:35:02.422977
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_025T15_9000005726_41964cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41964cztM0_level2_quad_clean.evt
Size (bytes)318,631,68090,601,920
Size303.9 MB 86.4 MB
Events in quadrant A3,527,941604,943
Events in quadrant B2,510,893623,387
Events in quadrant C2,565,534590,661
Events in quadrant D2,763,245540,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140624
B0112522
C0110342
D0120822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5481240.437876%
B548290.164174%
C548250.091208%
D5482671.222182%

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 8857 5483 9 9 0.10% 0.16%
B 8858 5484 1 1 0.01% 0.02%
C 8858 5484 0 0 0.00% 0.00%
D 8858 5484 55 55 0.62% 1.00%

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 2 79 610895 4874.33 607 592 125.2
A 10 83 543653 4337.28 607 592 125.2
A 13 6 18288 141.33 607 592 125.2
B 5 255 56030 464.17 606 589 119.4
B 0 190 44166 364.84 606 589 119.4
B 12 111 15245 122.7 606 589 119.4
C 15 214 241695 1722.76 593 597 139.9
C 15 111 5643 36.06 593 597 139.9
C 13 61 3952 23.97 593 597 139.9
D 13 249 268878 1825.95 589 572 146.9
D 12 6 66291 447.25 589 572 146.9
D 1 52 56519 380.75 589 572 146.9

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