ASTROSAT CZTI

Data Quality Report

Orbit 30822

Creation date: 2024-06-27T20:20:02.619212
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/AS1A10_071T38_9000004454_30822cztM0_level2.evt modeM0/AS1A10_071T38_9000004454_30822cztM0_level2_quad_clean.evt
Size (bytes)373,412,16033,287,040
Size356.1 MB 31.7 MB
Events in quadrant A2,136,846194,328
Events in quadrant B3,220,638195,032
Events in quadrant C2,063,126186,916
Events in quadrant D3,638,067171,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085401
B0121211
C082731
D0133411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36762627.127312%
B367638710.527748%
C36762587.018498%
D367672119.613711%

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 3782 3676 33 33 0.87% 0.90%
B 3782 3676 10 10 0.26% 0.27%
C 3782 3676 0 0 0.00% 0.00%
D 3782 3677 508 508 13.43% 13.82%

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 0 13 227745 2223.28 494 482 102.2
A 13 254 6175 55.69 494 482 102.2
A 3 137 5267 46.81 494 482 102.2
B 6 159 1041002 10895.37 483 470 95.5
B 5 255 170760 1783.1 483 470 95.5
B 15 33 53010 550.14 483 470 95.5
C 3 233 128628 1127.35 472 475 113.7
C 14 238 74835 654.14 472 475 113.7
C 2 114 8738 72.69 472 475 113.7
D 8 195 1621681 14465.04 465 452 112.1
D 2 250 112243 997.43 465 452 112.1
D 13 174 94197 836.42 465 452 112.1

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