ASTROSAT CZTI

Data Quality Report

Orbit 50961

Creation date: 2025-02-28T23:12:20.448467
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/AS1C07_001T02_9000006452_50961cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50961cztM0_level2_quad_clean.evt
Size (bytes)912,211,20083,488,320
Size870.0 MB 79.6 MB
Events in quadrant A7,196,194598,060
Events in quadrant B13,414,234311,891
Events in quadrant C4,681,013622,604
Events in quadrant D7,919,027494,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263791
B0448481
C0187891
D0285421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7191121916.951745%
B7191441661.410096%
C71923865.367075%
D7192147920.564516%

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 7431 7194 921 921 12.39% 12.80%
B 7431 7192 3979 3979 53.55% 55.33%
C 7432 7195 206 206 2.77% 2.86%
D 7432 7194 1209 1209 16.27% 16.81%

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 8 43 2044484 11244.19 725 706 181.8
A 14 254 1285147 7066.57 725 706 181.8
A 4 3 185503 1016.69 725 706 181.8
B 5 236 10945604 117342.99 438 423 93.3
B 8 128 154535 1652.23 438 423 93.3
B 4 171 135919 1452.65 438 423 93.3
C 13 3 378921 1868.06 735 726 202.5
C 0 193 346950 1710.14 735 726 202.5
C 3 233 142413 699.85 735 726 202.5
D 8 176 3249297 17662.84 659 636 183.9
D 2 249 678379 3684.86 659 636 183.9
D 10 181 611322 3320.28 659 636 183.9

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