ASTROSAT CZTI

Data Quality Report

Orbit 45837

Creation date: 2024-06-27T23:16:44.059696
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/AS1T05_186T01_9000006130_45837cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45837cztM0_level2_quad_clean.evt
Size (bytes)120,248,64025,030,080
Size114.7 MB 23.9 MB
Events in quadrant A1,394,513161,239
Events in quadrant B1,086,364177,847
Events in quadrant C715,770171,915
Events in quadrant D1,143,664143,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050161
B043051
C029821
D043073

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1394926.599713%
B1394473.371593%
C1394120.860832%
D139314110.122039%

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 1394 1394 1 1 0.07% 0.07%
B 1394 1394 10 10 0.72% 0.72%
C 1394 1394 0 0 0.00% 0.00%
D 1393 1393 95 95 6.82% 6.82%

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 10 83 719218 19000.15 174 170 37.8
A 13 254 2273 55.57 174 170 37.8
A 3 137 1879 45.16 174 170 37.8
B 3 112 318586 8699.99 177 172 36.6
B 4 171 54799 1492.57 177 172 36.6
B 0 189 5986 158.86 177 172 36.6
C 2 14 29300 677.67 174 175 43.0
C 1 90 4261 95.07 174 175 43.0
C 3 233 1901 40.16 174 175 43.0
D 12 2 342792 7945.69 165 159 43.1
D 11 241 74178 1716.51 165 159 43.1
D 1 52 45752 1057.31 165 159 43.1

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