ASTROSAT CZTI

Data Quality Report

Orbit 19857

Creation date: 2024-06-27T18:07:57.020241
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/AS1T03_118T01_9000002962_19857cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19857cztM0_level2_quad_clean.evt
Size (bytes)1,215,043,200142,502,400
Size1.1 GB 135.9 MB
Events in quadrant A18,989,756650,850
Events in quadrant B5,361,1821,023,931
Events in quadrant C5,298,401974,276
Events in quadrant D6,449,326947,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0635212
B0225573
C0221922
D0261762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10360620059.845560%
B103601301.254826%
C103601301.254826%
D103602102.027027%

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 12735 10360 5356 5356 42.06% 51.70%
B 12735 10360 16 16 0.13% 0.15%
C 12735 10360 0 0 0.00% 0.00%
D 12735 10361 126 126 0.99% 1.22%

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 14 238 14748596 82270.9 903 886 179.3
A 14 254 758969 4229.01 903 886 179.3
A 5 16 10865 55.67 903 886 179.3
B 3 64 61436 241.8 1330 1297 248.7
B 12 111 29510 113.44 1330 1297 248.7
B 0 214 29445 113.18 1330 1297 248.7
C 14 238 199498 661.64 1290 1302 299.6
C 9 221 59042 192.75 1290 1302 299.6
C 3 233 10561 30.91 1290 1302 299.6
D 1 52 730410 2324.12 1294 1258 313.7
D 2 184 690366 2196.48 1294 1258 313.7
D 12 218 56323 175.52 1294 1258 313.7

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