ASTROSAT CZTI

Data Quality Report

Orbit 11953

Creation date: 2024-06-27T16:20:28.682224
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/AS1A04_124T01_9000001766_11953cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11953cztM0_level2_quad_clean.evt
Size (bytes)466,954,560118,186,560
Size445.3 MB 112.7 MB
Events in quadrant A3,241,861802,524
Events in quadrant B4,138,390794,855
Events in quadrant C2,811,934798,822
Events in quadrant D3,533,803756,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138102
B0164851
C0126281
D0147401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6113901.472272%
B61134116.723376%
C6113540.883363%
D61131732.830034%

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 7254 6114 1 1 0.01% 0.02%
B 7254 6114 264 264 3.64% 4.32%
C 7254 6114 3 3 0.04% 0.05%
D 7254 6114 103 103 1.42% 1.68%

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 1 162 127406 854.13 730 714 148.3
A 1 178 66678 444.71 730 714 148.3
A 1 161 58316 388.34 730 714 148.3
B 4 239 1019727 7684.4 715 699 132.6
B 15 204 169786 1275.07 715 699 132.6
B 0 219 45480 337.69 715 699 132.6
C 14 234 14562 83.86 717 720 165.1
C 13 61 5403 28.37 717 720 165.1
C 0 207 2409 10.23 717 720 165.1
D 1 52 332494 1953.48 708 688 169.9
D 8 195 171401 1005.06 708 688 169.9
D 10 50 73208 426.95 708 688 169.9

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