ASTROSAT CZTI

Data Quality Report

Orbit 07915

Creation date: 2024-06-27T15:25:30.167481
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/AS1A02_027T01_9000001084_07915cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07915cztM0_level2_quad_clean.evt
Size (bytes)510,085,44093,173,760
Size486.5 MB 88.9 MB
Events in quadrant A3,119,269583,650
Events in quadrant B3,294,643605,285
Events in quadrant C5,053,067607,260
Events in quadrant D3,547,274579,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136063
B0141032
C0193192
D0148212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400620.968750%
B6400711.109375%
C64004166.500000%
D64001141.781250%

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 7620 6401 1 1 0.01% 0.02%
B 7620 6401 3 3 0.04% 0.05%
C 7620 6401 208 208 2.73% 3.25%
D 7620 6401 54 54 0.71% 0.84%

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 15 234 44457 270.86 792 776 161.3
A 3 1 10039 57.44 792 776 161.3
A 0 226 7432 41.27 792 776 161.3
B 4 239 69308 451.29 805 787 151.8
B 4 81 66720 434.24 805 787 151.8
B 12 111 15624 97.72 805 787 151.8
C 1 16 2025251 11320.76 775 778 178.8
C 12 4 6464 31.8 775 778 178.8
C 13 61 5776 27.95 775 778 178.8
D 1 52 271066 1426.14 779 755 189.5
D 5 233 98275 514.51 779 755 189.5
D 6 18 62108 323.69 779 755 189.5

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