ASTROSAT CZTI

Data Quality Report

Orbit 50222

Creation date: 2025-01-10T21:30:17.225418
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/AS1C09_003T01_9000006442_50222cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50222cztM0_level2_quad_clean.evt
Size (bytes)1,583,038,08057,202,560
Size1.5 GB 54.6 MB
Events in quadrant A14,991,811306,535
Events in quadrant B6,294,382751,563
Events in quadrant C18,759,53451,444
Events in quadrant D17,954,98980,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499550
B0240990
C0611260
D0585940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7789477861.342920%
B77894535.815894%
C7789731193.863140%
D7789704690.460906%

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 7789 7789 4671 4671 59.97% 59.97%
B 7789 7789 344 344 4.42% 4.42%
C 7788 7788 6875 6875 88.28% 88.28%
D 7788 7788 6702 6702 86.06% 86.06%

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 98 9806251 64938.26 587 570 151.0
A 4 249 675536 4469.97 587 570 151.0
A 7 206 468047 3095.87 587 570 151.0
B 4 206 1758196 10395.08 797 770 169.1
B 10 28 285054 1681.52 797 770 169.1
B 9 218 130221 765.7 797 770 169.1
C 15 197 9664986 108204.37 301 296 89.3
C 4 111 2676284 29959.95 301 296 89.3
C 15 213 1717383 19224.24 301 296 89.3
D 7 61 6056948 45854.42 426 409 132.1
D 15 108 2942056 22271.38 426 409 132.1
D 7 43 1396122 10567.03 426 409 132.1

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