ASTROSAT CZTI

Data Quality Report

Orbit 51958

Creation date: 2025-05-07T02:09:29.348096
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_011T06_9000006468_51958cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51958cztM0_level2_quad_clean.evt
Size (bytes)767,367,36080,657,280
Size731.8 MB 76.9 MB
Events in quadrant A5,010,297567,410
Events in quadrant B5,813,757565,713
Events in quadrant C8,580,010417,070
Events in quadrant D8,519,737456,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191741
B0215671
C0298021
D0295483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62334276.850634%
B6234100616.137312%
C6234211533.926853%
D6233137522.060003%

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 7338 6234 283 283 3.86% 4.54%
B 7339 6235 738 738 10.06% 11.84%
C 7339 6234 1530 1530 20.85% 24.54%
D 7338 6234 1418 1418 19.32% 22.75%

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 7 64 1610914 10103.7 640 623 159.4
A 4 249 170801 1067.77 640 623 159.4
A 4 3 145473 908.86 640 623 159.4
B 10 41 2114391 16275.27 616 597 129.9
B 8 3 171038 1312.32 616 597 129.9
B 8 234 125749 963.61 616 597 129.9
C 15 224 5265721 35832.31 527 521 146.9
C 4 5 505902 3439.37 527 521 146.9
C 13 3 159981 1085.2 527 521 146.9
D 6 42 2714486 16351.97 589 562 166.0
D 12 16 1658756 9990.97 589 562 166.0
D 2 172 631873 3803.78 589 562 166.0

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