ASTROSAT CZTI

Data Quality Report

Orbit 38345

Creation date: 2024-06-27T21:51:30.351229
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/AS1A10_094T24_9000005374_38345cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38345cztM0_level2_quad_clean.evt
Size (bytes)422,239,68090,950,400
Size402.7 MB 86.7 MB
Events in quadrant A2,811,607664,545
Events in quadrant B3,262,178647,174
Events in quadrant C2,563,486637,944
Events in quadrant D6,599,451450,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114242
B0130181
C0106461
D0234271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5056160.316456%
B50562434.806171%
C505660.118671%
D5056122424.208861%

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 7089 5057 3 3 0.04% 0.06%
B 7089 5057 230 230 3.24% 4.55%
C 7089 5057 4 4 0.06% 0.08%
D 7089 5057 1151 1151 16.24% 22.76%

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 375424 3086.88 605 595 121.4
A 12 189 53850 438.58 605 595 121.4
A 13 248 21928 175.69 605 595 121.4
B 5 184 640087 5852.11 582 569 109.3
B 0 183 89326 812.2 582 569 109.3
B 0 155 52799 477.95 582 569 109.3
C 15 214 217264 1626.58 579 584 133.2
C 14 254 39976 295.71 579 584 133.2
C 1 23 13875 99.77 579 584 133.2
D 10 203 1846429 14888.44 508 495 124.0
D 12 227 1175211 9474.71 508 495 124.0
D 12 233 652568 5259.32 508 495 124.0

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