ASTROSAT CZTI

Data Quality Report

Orbit 50206

Creation date: 2025-01-10T19:55:06.005789
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_50206cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50206cztM0_level2_quad_clean.evt
Size (bytes)1,196,812,80060,857,280
Size1.1 GB 58.0 MB
Events in quadrant A9,878,297408,135
Events in quadrant B4,860,658661,316
Events in quadrant C15,370,6503,251
Events in quadrant D13,669,784296,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340371
B0191081
C0503001
D0453124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6779264839.061809%
B67793705.458032%
C6779675199.586960%
D6778363653.644143%

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 7189 6778 2224 2224 30.94% 32.81%
B 7190 6780 214 214 2.98% 3.16%
C 7189 6778 5218 5218 72.58% 76.98%
D 7189 6779 3486 3486 48.49% 51.42%

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 4325874 29294.27 597 583 147.6
A 12 250 993274 6723.28 597 583 147.6
A 7 206 496426 3358.24 597 583 147.6
B 4 206 1385895 9404.3 697 673 147.3
B 5 185 141412 955.48 697 673 147.3
B 0 155 113300 764.63 697 673 147.3
C 4 111 8593917 250681.82 116 115 34.3
C 15 199 5738868 167399.83 116 115 34.3
C 0 177 106909 3115.19 116 115 34.3
D 7 61 4634013 29810.67 539 518 155.4
D 15 108 2243212 14428.89 539 518 155.4
D 15 185 655143 4211.68 539 518 155.4

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