ASTROSAT CZTI

Data Quality Report

Orbit 40628

Creation date: 2024-06-27T22:18:24.990493
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/AS1A12_012T01_9000005554_40628cztM0_level2.fits modeM0/AS1A12_012T01_9000005554_40628cztM0_level2_quad_clean.evt
Size (bytes)770,817,600185,613,120
Size735.1 MB 177.0 MB
Events in quadrant A6,190,4231,276,105
Events in quadrant B6,645,0421,303,936
Events in quadrant C5,860,3041,265,358
Events in quadrant D8,908,944947,532

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258053
B0276283
C0251383
D0345313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11952400.334672%
B119521411.179719%
C11952800.669344%
D11952247020.665997%

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 14637 11954 14 14 0.10% 0.12%
B 14637 11954 90 90 0.61% 0.75%
C 14637 11954 64 64 0.44% 0.54%
D 14637 11954 741 741 5.06% 6.20%

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 1014930 3889.26 1284 1257 260.6
A 12 189 83325 314.88 1284 1257 260.6
A 2 79 50950 190.66 1284 1257 260.6
B 0 229 589460 2371.19 1282 1242 248.1
B 0 190 318626 1279.42 1282 1242 248.1
B 5 255 180899 724.22 1282 1242 248.1
C 15 214 511511 1722.78 1265 1273 296.2
C 14 254 330920 1113.03 1265 1273 296.2
C 0 10 42096 137.83 1265 1273 296.2
D 12 227 1237443 4425.52 1132 1102 279.4
D 13 249 682025 2437.39 1132 1102 279.4
D 5 32 582175 2079.97 1132 1102 279.4

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