ASTROSAT CZTI

Data Quality Report

Orbit 50184

Creation date: 2025-01-10T16:53:21.158109
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_50184cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50184cztM0_level2_quad_clean.evt
Size (bytes)965,223,36061,433,280
Size920.5 MB 58.6 MB
Events in quadrant A6,046,031517,538
Events in quadrant B4,701,204553,524
Events in quadrant C13,801,08163,280
Events in quadrant D10,724,603311,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222121
B0180332
C0449431
D0359371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59175559.379753%
B591660310.192698%
C5916529489.486139%
D5916255543.187965%

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 6837 5918 402 402 5.88% 6.79%
B 6836 5917 357 357 5.22% 6.03%
C 6836 5917 4684 4684 68.52% 79.16%
D 6836 5917 2640 2640 38.62% 44.62%

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 6 250 991161 6636.43 598 583 149.3
A 4 4 774713 5186.33 598 583 149.3
A 8 8 449982 3010.77 598 583 149.3
B 4 206 1347799 10650.22 586 565 126.5
B 3 249 263033 2074.87 586 565 126.5
B 5 172 146157 1150.94 586 565 126.5
C 15 213 6869928 98069.9 245 243 70.0
C 4 111 3528273 50365.27 245 243 70.0
C 15 230 616345 8795.32 245 243 70.0
D 15 185 2015028 14093.92 500 484 142.9
D 12 6 1180748 8257.22 500 484 142.9
D 15 108 993910 6950.09 500 484 142.9

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