ASTROSAT CZTI

Data Quality Report

Orbit 54230

Creation date: 2025-10-07T01:50:56.687402
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_004T08_9000006514_54230cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54230cztM0_level2_quad_clean.evt
Size (bytes)963,495,36089,274,240
Size918.9 MB 85.1 MB
Events in quadrant A8,222,384582,490
Events in quadrant B5,188,713781,178
Events in quadrant C5,297,052658,830
Events in quadrant D16,354,181139,252

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300310
B0208920
C0212800
D0539584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7779177222.779278%
B77793174.075074%
C77804766.118252%
D7779620279.727471%

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 7779 7779 1365 1365 17.55% 17.55%
B 7779 7779 151 151 1.94% 1.94%
C 7780 7780 373 373 4.79% 4.79%
D 7779 7779 5002 5002 64.30% 64.30%

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 12 17 3173155 17912.17 711 693 177.1
A 5 243 824557 4651.65 711 693 177.1
A 12 194 401695 2264.11 711 693 177.1
B 4 171 809747 4771.3 800 774 169.5
B 5 236 461610 2718.0 800 774 169.5
B 10 247 224285 1318.26 800 774 169.5
C 15 215 914528 4316.28 773 764 211.7
C 1 241 407639 1921.92 773 764 211.7
C 15 216 286795 1351.1 773 764 211.7
D 8 176 14652633 173761.16 290 276 84.3
D 2 172 123714 1463.84 290 276 84.3
D 3 12 88315 1044.05 290 276 84.3

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