ASTROSAT CZTI

Data Quality Report

Orbit 47809

Creation date: 2024-07-31T16:21:20.740672
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/AS1A13_037T05_9000006352_47809cztM0_level2.fits modeM0/AS1A13_037T05_9000006352_47809cztM0_level2_quad_clean.evt
Size (bytes)196,917,12048,870,720
Size187.8 MB 46.6 MB
Events in quadrant A2,920,181319,730
Events in quadrant B1,328,003346,682
Events in quadrant C1,299,748323,557
Events in quadrant D1,522,240290,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105831
B057371
C057571
D064541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27951073.828265%
B2795170.608229%
C2795100.357782%
D2795511.824687%

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 2795 2795 53 53 1.90% 1.90%
B 2795 2795 0 0 0.00% 0.00%
C 2795 2795 0 0 0.00% 0.00%
D 2795 2795 19 19 0.68% 0.68%

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 10 83 1639826 24312.24 320 313 67.4
A 0 31 46214 680.66 320 313 67.4
A 3 137 3562 48.18 320 313 67.4
B 0 200 19824 300.94 328 319 64.8
B 12 111 8130 120.51 328 319 64.8
B 11 111 7546 111.5 328 319 64.8
C 12 2 11898 149.32 326 328 77.5
C 14 254 6778 83.24 326 328 77.5
C 6 247 4693 56.33 326 328 77.5
D 2 249 120643 1523.44 318 309 79.0
D 12 2 81262 1024.87 318 309 79.0
D 2 165 37828 474.99 318 309 79.0

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