ASTROSAT CZTI

Data Quality Report

Orbit 48087

Creation date: 2024-08-19T11:58:19.303266
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/AS1A13_071T07_9000006398_48087cztM0_level2.fits modeM0/AS1A13_071T07_9000006398_48087cztM0_level2_quad_clean.evt
Size (bytes)430,577,28085,829,760
Size410.6 MB 81.9 MB
Events in quadrant A7,261,042714,180
Events in quadrant B1,225,355118
Events in quadrant C3,136,642730,151
Events in quadrant D3,754,988659,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261233
B075873
C0149023
D0166473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71023755.280203%
B7102710199.985919%
C7102801.126443%
D71022183.069558%

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 7757 7104 57 57 0.73% 0.80%
B 7756 7101 0 0 0.00% 0.00%
C 7757 7104 29 29 0.37% 0.41%
D 7757 7104 171 171 2.20% 2.41%

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 4250982 27497.48 747 730 154.6
A 14 248 76561 490.6 747 730 154.6
A 7 3 20014 124.76 747 730 154.6
B 2 177 981056 80826.21 49 48 12.1
B 4 21 28022 2304.81 49 48 12.1
B 5 255 8141 666.79 49 48 12.1
C 12 2 83571 468.18 749 750 176.9
C 14 254 77646 434.69 749 750 176.9
C 15 208 29004 159.72 749 750 176.9
D 2 249 693125 3695.55 740 714 187.4
D 11 224 78017 412.58 740 714 187.4
D 14 34 65159 343.96 740 714 187.4

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