ASTROSAT CZTI

Data Quality Report

Orbit 46762

Creation date: 2024-06-27T23:27:18.528693
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_034T01_9000006264_46762cztM0_level2.fits modeM0/AS1A13_034T01_9000006264_46762cztM0_level2_quad_clean.evt
Size (bytes)239,993,28049,754,880
Size228.9 MB 47.4 MB
Events in quadrant A3,319,995323,135
Events in quadrant B1,632,524344,778
Events in quadrant C1,443,691329,493
Events in quadrant D2,247,181290,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01196017
B069981
C065624
D087631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30711785.796158%
B3076280.910273%
C3074200.650618%
D30761815.884265%

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 3076 3075 77 77 2.50% 2.50%
B 3076 3076 11 11 0.36% 0.36%
C 3076 3075 17 17 0.55% 0.55%
D 3076 3076 172 172 5.59% 5.59%

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 1712448 24189.04 329 321 70.8
A 9 191 218763 3086.16 329 321 70.8
A 13 248 82590 1162.3 329 321 70.8
B 3 112 115981 1729.3 335 326 66.9
B 0 183 83324 1241.01 335 326 66.9
B 0 198 56731 843.38 335 326 66.9
C 15 208 78848 1020.83 324 325 76.9
C 14 254 71213 921.57 324 325 76.9
C 3 233 26269 337.28 324 325 76.9
D 1 52 377074 4657.84 316 305 80.9
D 13 249 335213 4140.33 316 305 80.9
D 15 217 190572 2352.19 316 305 80.9

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