ASTROSAT CZTI

Data Quality Report

Orbit 50811

Creation date: 2025-02-19T09:44:49.424606
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_50811cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50811cztM0_level2_quad_clean.evt
Size (bytes)479,321,28086,509,440
Size457.1 MB 82.5 MB
Events in quadrant A4,254,664571,915
Events in quadrant B3,727,662612,184
Events in quadrant C4,811,667514,528
Events in quadrant D4,483,458502,224

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166070
B0152650
C0183060
D0174000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59913025.040895%
B59923465.774366%
C59925949.913218%
D59923495.824433%

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 7081 5991 254 254 3.59% 4.24%
B 7081 5991 246 246 3.47% 4.11%
C 7082 5992 492 492 6.95% 8.21%
D 7082 5992 290 290 4.09% 4.84%

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 6 161 793069 5037.95 639 625 157.3
A 4 3 132968 841.37 639 625 157.3
A 9 13 126487 800.16 639 625 157.3
B 8 128 807792 6016.77 630 608 134.2
B 0 216 77537 573.43 630 608 134.2
B 4 206 51576 379.92 630 608 134.2
C 15 158 780832 4661.32 610 602 167.4
C 5 10 670514 4002.25 610 602 167.4
C 13 3 198665 1183.29 610 602 167.4
D 15 108 377869 2159.64 617 594 174.7
D 2 216 333493 1905.62 617 594 174.7
D 2 249 295017 1685.37 617 594 174.7

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