ASTROSAT CZTI

Data Quality Report

Orbit 39365

Creation date: 2024-06-27T22:03:43.215165
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_018T01_9000005470_39365cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39365cztM0_level2_quad_clean.evt
Size (bytes)1,864,082,880341,953,920
Size1.7 GB 326.1 MB
Events in quadrant A11,339,9522,452,229
Events in quadrant B10,069,6102,519,373
Events in quadrant C12,192,0702,316,749
Events in quadrant D33,742,6661,585,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04380
B04380
C04380
D04380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464387
B0452708
C0501326
D01152106

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21479960.446948%
B214781370.637862%
C214783411.587671%
D21478645630.058665%

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 32276 21484 62 62 0.19% 0.29%
B 32276 21483 85 85 0.26% 0.40%
C 32276 21483 289 289 0.90% 1.35%
D 32276 21483 6049 6049 18.74% 28.16%

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 1555535 3299.97 2365 2319 470.7
A 15 223 285210 601.03 2365 2319 470.7
A 2 79 186742 391.83 2365 2319 470.7
B 4 170 546234 1224.11 2342 2272 444.4
B 5 255 261969 584.41 2342 2272 444.4
B 12 111 55965 120.83 2342 2272 444.4
C 14 254 1744588 3360.5 2271 2284 518.5
C 15 214 898311 1728.23 2271 2284 518.5
C 9 187 591871 1137.18 2271 2284 518.5
D 12 235 22857682 46522.75 2021 1963 491.3
D 12 227 1258520 2557.72 2021 1963 491.3
D 13 249 733827 1489.71 2021 1963 491.3

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