ASTROSAT CZTI

Data Quality Report

Orbit 38823

Creation date: 2024-06-27T21:56:53.668190
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_083T02_9000005404_38823cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38823cztM0_level2_quad_clean.evt
Size (bytes)159,932,16040,556,160
Size152.5 MB 38.7 MB
Events in quadrant A1,386,751276,199
Events in quadrant B1,102,141290,773
Events in quadrant C1,131,498273,344
Events in quadrant D2,126,616229,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054452
B046111
C046251
D078611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2197120.546199%
B219780.364133%
C219740.182066%
D21971968.921256%

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 4230 2198 2 2 0.05% 0.09%
B 4230 2198 1 1 0.02% 0.05%
C 4230 2198 2 2 0.05% 0.09%
D 4230 2198 202 202 4.78% 9.19%

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 13 248 180883 3324.33 262 257 54.3
A 10 83 180085 3309.64 262 257 54.3
A 9 143 5286 92.56 262 257 54.3
B 5 200 27306 531.7 262 256 50.9
B 5 172 11830 227.5 262 256 50.9
B 0 221 11023 211.64 262 256 50.9
C 15 214 97422 1626.18 254 256 59.8
C 1 23 34053 565.63 254 256 59.8
C 0 10 5873 94.01 254 256 59.8
D 12 227 652675 10812.6 246 238 60.3
D 2 16 202703 3355.38 246 238 60.3
D 12 235 113294 1873.64 246 238 60.3

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