ASTROSAT CZTI

Data Quality Report

Orbit 52081

Creation date: 2025-05-15T10:06:29.150487
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_011T07_9000006470_52081cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52081cztM0_level2_quad_clean.evt
Size (bytes)1,418,250,24067,769,280
Size1.3 GB 64.6 MB
Events in quadrant A4,321,885713,605
Events in quadrant B14,657,595297,207
Events in quadrant C11,839,552494,577
Events in quadrant D21,078,1521,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01602
B01600
C01580
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018656121
B049870954
C041332671
D0691931136

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78681301.652262%
B7797508565.217391%
C7820273234.936061%
D7799778699.833312%

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 7931 7897 125 125 1.58% 1.58%
B 7931 7801 4031 4031 50.83% 51.67%
C 7931 7849 2604 2604 32.83% 33.18%
D 7931 7798 7728 7728 97.44% 99.10%

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 3 130 306651 1531.61 800 781 199.7
A 6 196 211085 1053.08 800 781 199.7
A 5 240 119390 593.92 800 781 199.7
B 5 172 10256766 104061.8 461 446 98.6
B 10 128 1020684 10351.45 461 446 98.6
B 10 254 534314 5416.69 461 446 98.6
C 15 224 5341545 28565.47 674 668 187.0
C 5 80 2506909 13404.53 674 668 187.0
C 2 239 349304 1864.67 674 668 187.0
D 15 94 19357436 501459.22 127 121 38.6
D 6 42 641396 16612.49 127 121 38.6
D 3 12 168088 4351.25 127 121 38.6

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