ASTROSAT CZTI

Data Quality Report

Orbit 46796

Creation date: 2024-06-27T23:27:45.599104
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_053T01_9000006266_46796cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46796cztM0_level2_quad_clean.evt
Size (bytes)465,569,280104,728,320
Size444.0 MB 99.9 MB
Events in quadrant A5,931,298696,649
Events in quadrant B2,941,836730,702
Events in quadrant C2,752,588690,888
Events in quadrant D5,101,961598,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217161
B0134361
C0132311
D0197992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65182363.620743%
B6518500.767106%
C6519170.260776%
D65185057.747775%

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 7318 6519 41 41 0.56% 0.63%
B 7318 6518 4 4 0.05% 0.06%
C 7319 6519 1 1 0.01% 0.02%
D 7318 6519 402 402 5.49% 6.17%

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 3041925 20792.26 705 689 146.3
A 13 248 69654 471.5 705 689 146.3
A 15 235 53918 363.91 705 689 146.3
B 5 172 33471 233.28 712 689 140.5
B 0 198 19804 136.02 712 689 140.5
B 12 111 17945 122.79 712 689 140.5
C 14 254 17203 100.61 698 701 164.0
C 3 233 8135 45.32 698 701 164.0
C 14 67 4793 24.95 698 701 164.0
D 13 249 989775 5832.35 679 657 169.6
D 13 138 706878 4164.25 679 657 169.6
D 1 52 607149 3576.19 679 657 169.6

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