ASTROSAT CZTI

Data Quality Report

Orbit 50918

Creation date: 2025-02-26T12:20:56.105267
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_001T01_9000006450_50918cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50918cztM0_level2_quad_clean.evt
Size (bytes)1,021,435,20080,184,960
Size974.1 MB 76.5 MB
Events in quadrant A16,599,875146,503
Events in quadrant B3,441,492751,230
Events in quadrant C7,370,525591,143
Events in quadrant D9,827,854425,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543430
B0156330
C0270030
D0342970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7373607082.327411%
B7374390.528885%
C737497113.167887%
D7374257134.865745%

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 7372 7372 5442 5442 73.82% 73.82%
B 7374 7374 14 14 0.19% 0.19%
C 7374 7374 865 865 11.73% 11.73%
D 7374 7374 2165 2165 29.36% 29.36%

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 14 254 12677026 131433.66 378 368 96.4
A 4 4 1119235 11600.6 378 368 96.4
A 12 80 283663 2937.25 378 368 96.4
B 8 128 87081 520.9 775 747 165.7
B 0 216 49648 295.05 775 747 165.7
B 7 252 48540 288.36 775 747 165.7
C 3 233 1423375 7184.93 724 718 198.0
C 5 10 926357 4674.81 724 718 198.0
C 12 247 794450 4008.63 724 718 198.0
D 7 45 4246681 23127.66 650 626 183.6
D 8 176 668681 3638.8 650 626 183.6
D 3 12 630495 3430.81 650 626 183.6

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