ASTROSAT CZTI

Data Quality Report

Orbit 41265

Creation date: 2024-06-27T22:26:44.635917
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_052T04_9000005638_41265cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41265cztM0_level2_quad_clean.evt
Size (bytes)524,151,360126,584,640
Size499.9 MB 120.7 MB
Events in quadrant A4,080,773873,725
Events in quadrant B4,790,124801,111
Events in quadrant C4,673,908815,177
Events in quadrant D5,228,818780,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172083
B0199542
C0192822
D0213362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8090270.333745%
B80907679.480841%
C80903254.017305%
D80901111.372064%

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 9433 8091 11 11 0.12% 0.14%
B 9433 8091 202 202 2.14% 2.50%
C 9433 8091 278 278 2.95% 3.44%
D 9433 8091 130 130 1.38% 1.61%

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 10 83 678225 3867.55 860 841 175.1
A 13 248 37951 211.88 860 841 175.1
A 12 189 35057 195.36 860 841 175.1
B 0 229 1212909 7875.39 787 763 153.9
B 0 186 197058 1275.34 787 763 153.9
B 0 190 153351 991.37 787 763 153.9
C 9 54 674838 3446.09 832 837 195.6
C 0 10 410962 2096.92 832 837 195.6
C 15 214 337341 1720.51 832 837 195.6
D 2 120 876108 4278.43 836 812 204.6
D 1 52 457416 2231.87 836 812 204.6
D 13 249 174881 850.85 836 812 204.6

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