ASTROSAT CZTI

Data Quality Report

Orbit 40516

Creation date: 2024-06-27T22:17:02.089766
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_097T02_9000005542_40516cztM0_level2.fits modeM0/AS1A12_097T02_9000005542_40516cztM0_level2_quad_clean.evt
Size (bytes)308,975,04089,573,760
Size294.7 MB 85.4 MB
Events in quadrant A2,957,369603,478
Events in quadrant B2,556,716629,046
Events in quadrant C2,890,487592,943
Events in quadrant D2,608,612506,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119872
B0111072
C0119332
D0114542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5432120.220913%
B543280.147275%
C5432561.030928%
D54324708.652430%

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 7164 5433 3 3 0.04% 0.06%
B 7164 5433 2 2 0.03% 0.04%
C 7164 5433 47 47 0.66% 0.87%
D 7164 5433 19 19 0.27% 0.35%

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 502500 3997.02 609 598 125.6
A 12 189 51398 404.56 609 598 125.6
A 2 79 25982 202.15 609 598 125.6
B 3 112 60963 505.26 609 593 119.5
B 4 170 30670 251.73 609 593 119.5
B 0 230 28681 235.08 609 593 119.5
C 10 20 269909 1926.53 594 598 139.8
C 15 214 242091 1727.53 594 598 139.8
C 14 254 42693 301.13 594 598 139.8
D 12 191 161431 1129.31 565 548 142.5
D 12 227 101184 706.41 565 548 142.5
D 12 128 46897 325.34 565 548 142.5

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