ASTROSAT CZTI

Data Quality Report

Orbit 38507

Creation date: 2024-06-27T21:53:40.531913
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_9000005386_38507cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38507cztM0_level2_quad_clean.evt
Size (bytes)305,478,72089,141,760
Size291.3 MB 85.0 MB
Events in quadrant A2,653,922616,050
Events in quadrant B2,591,220621,169
Events in quadrant C2,440,584580,559
Events in quadrant D3,238,217536,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108143
B0107272
C0101162
D0129322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4924130.264013%
B4924300.609261%
C4924110.223396%
D49241563.168156%

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 7018 4925 5 5 0.07% 0.10%
B 7018 4925 20 20 0.28% 0.41%
C 7018 4925 10 10 0.14% 0.20%
D 7018 4925 135 135 1.92% 2.74%

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 386264 3380.37 567 555 114.1
A 13 248 45163 390.95 567 555 114.1
A 13 6 15994 135.31 567 555 114.1
B 8 3 104437 983.63 561 548 105.6
B 0 183 90608 852.7 561 548 105.6
B 0 186 79841 750.76 561 548 105.6
C 15 214 208896 1621.91 550 554 128.5
C 0 10 43662 335.59 550 554 128.5
C 14 254 15666 117.64 550 554 128.5
D 13 249 344217 2583.4 551 536 133.0
D 12 233 270197 2027.0 551 536 133.0
D 2 250 139575 1045.14 551 536 133.0

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