ASTROSAT CZTI

Data Quality Report

Orbit 50198

Creation date: 2025-01-08T14:37:42.339357
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/AS1C09_003T01_9000006442_50198cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50198cztM0_level2_quad_clean.evt
Size (bytes)901,627,20061,980,480
Size859.9 MB 59.1 MB
Events in quadrant A5,055,331512,487
Events in quadrant B4,016,912573,287
Events in quadrant C13,674,69554,934
Events in quadrant D10,167,840319,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189571
B0160271
C0446361
D0343083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59535048.466320%
B59532804.703511%
C5953545091.550479%
D5952239140.171371%

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 6838 5954 371 371 5.43% 6.23%
B 6838 5954 179 179 2.62% 3.01%
C 6837 5952 4520 4520 66.11% 75.94%
D 6837 5952 2384 2384 34.87% 40.05%

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 0 98 670234 4479.58 599 585 149.5
A 11 7 339624 2267.98 599 585 149.5
A 8 8 332337 2219.24 599 585 149.5
B 3 249 625742 4883.95 603 584 128.0
B 4 206 515682 4024.12 603 584 128.0
B 0 213 51317 396.34 603 584 128.0
C 4 111 7923915 111453.01 235 232 71.1
C 15 213 1335922 18787.56 235 232 71.1
C 15 196 613549 8626.8 235 232 71.1
D 15 185 1941074 13284.91 510 493 146.1
D 7 61 1320287 9035.1 510 493 146.1
D 15 168 878480 6010.56 510 493 146.1

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