ASTROSAT CZTI

Data Quality Report

Orbit 46762

Creation date: 2024-06-27T23:27:19.294306
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_053T01_9000006266_46762cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46762cztM0_level2_quad_clean.evt
Size (bytes)217,823,04047,652,480
Size207.7 MB 45.4 MB
Events in quadrant A3,368,931297,089
Events in quadrant B1,525,055331,765
Events in quadrant C1,443,123317,042
Events in quadrant D1,504,715295,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117556
B063552
C062051
D064121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282333912.008502%
B28241033.647309%
C2824832.939093%
D2824592.089235%

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 3930 2824 184 184 4.68% 6.52%
B 3928 2823 27 27 0.69% 0.96%
C 3929 2824 35 35 0.89% 1.24%
D 3929 2824 9 9 0.23% 0.32%

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 1437702 21644.57 317 311 66.4
A 9 191 410280 6173.41 317 311 66.4
A 13 248 219619 3302.39 317 311 66.4
B 4 171 135095 2045.07 329 318 65.9
B 3 112 48214 726.76 329 318 65.9
B 0 198 16144 240.14 329 318 65.9
C 15 208 131588 1707.53 323 324 76.9
C 14 254 38878 501.52 323 324 76.9
C 3 233 7653 95.34 323 324 76.9
D 1 52 128868 1583.84 328 317 81.2
D 13 249 61696 756.23 328 317 81.2
D 13 138 12753 153.22 328 317 81.2

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