ASTROSAT CZTI

Data Quality Report

Orbit 46257

Creation date: 2024-06-27T23:20:55.315371
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_071T10_9000006192_46257cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46257cztM0_level2_quad_clean.evt
Size (bytes)459,224,640105,223,680
Size438.0 MB 100.3 MB
Events in quadrant A5,624,917702,624
Events in quadrant B4,053,972721,258
Events in quadrant C3,317,948693,159
Events in quadrant D3,522,723638,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208331
B0160871
C0141011
D0146121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61762363.821244%
B61772864.630079%
C61772303.723490%
D61772063.334952%

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 7311 6177 5 5 0.07% 0.08%
B 7311 6176 135 135 1.85% 2.19%
C 7312 6177 125 125 1.71% 2.02%
D 7312 6177 76 76 1.04% 1.23%

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 2861079 19406.17 711 696 147.4
A 13 254 10232 64.7 711 696 147.4
A 13 6 10123 63.96 711 696 147.4
B 3 112 801804 5898.07 702 682 135.8
B 5 32 355207 2610.1 702 682 135.8
B 5 172 95181 695.73 702 682 135.8
C 12 2 386142 2375.58 702 704 162.2
C 1 3 165657 1016.66 702 704 162.2
C 11 16 16664 98.37 702 704 162.2
D 1 52 274064 1565.79 705 684 174.6
D 13 249 185709 1059.74 705 684 174.6
D 8 129 105465 600.14 705 684 174.6

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