ASTROSAT CZTI

Data Quality Report

Orbit 40271

Creation date: 2024-06-27T22:14:24.489946
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_056T02_9000005538_40271cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40271cztM0_level2_quad_clean.evt
Size (bytes)359,858,88098,786,880
Size343.2 MB 94.2 MB
Events in quadrant A3,142,972681,745
Events in quadrant B2,697,401703,799
Events in quadrant C2,722,595660,014
Events in quadrant D4,348,045577,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125242
B0112811
C0110791
D0164871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5265551.044634%
B5265170.322887%
C5265170.322887%
D52654097.768281%

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 7269 5266 25 25 0.34% 0.47%
B 7269 5266 2 2 0.03% 0.04%
C 7269 5266 11 11 0.15% 0.21%
D 7269 5266 356 356 4.90% 6.76%

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 476598 3735.84 634 625 127.4
A 13 248 145614 1138.0 634 625 127.4
A 12 189 46541 360.39 634 625 127.4
B 0 245 90944 756.51 632 617 119.4
B 5 255 79291 658.91 632 617 119.4
B 4 170 22583 183.97 632 617 119.4
C 15 214 224677 1580.56 614 620 141.8
C 14 254 65028 454.35 614 620 141.8
C 0 10 15805 107.12 614 620 141.8
D 12 227 940335 6565.22 589 574 143.1
D 1 47 812107 5669.41 589 574 143.1
D 9 19 110259 766.26 589 574 143.1

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