ASTROSAT CZTI

Data Quality Report

Orbit 26892

Creation date: 2024-06-27T19:34:08.666051
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/AS1A09_038T17_9000003884_26892cztM0_level2.evt modeM0/AS1A09_038T17_9000003884_26892cztM0_level2_quad_clean.evt
Size (bytes)254,724,48056,450,880
Size242.9 MB 53.8 MB
Events in quadrant A1,826,372374,338
Events in quadrant B2,173,333381,100
Events in quadrant C1,569,254381,308
Events in quadrant D1,945,254363,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073410
B083530
C063530
D076750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2925200.683761%
B29251846.290598%
C2925200.683761%
D2925491.675214%

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 4175 2926 7 7 0.17% 0.24%
B 4175 2926 89 89 2.13% 3.04%
C 4175 2926 0 0 0.00% 0.00%
D 4175 2926 44 44 1.05% 1.50%

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 0 13 246349 3109.01 391 383 79.1
A 6 16 67447 847.69 391 383 79.1
A 13 254 4746 55.15 391 383 79.1
B 3 64 403047 5513.84 389 380 73.0
B 0 190 130259 1778.47 389 380 73.0
B 10 246 70102 954.72 389 380 73.0
C 14 238 62669 686.34 386 389 90.7
C 13 61 2688 25.34 386 389 90.7
C 8 222 1013 6.88 386 389 90.7
D 1 52 319250 3528.89 381 373 90.4
D 2 250 88154 971.44 381 373 90.4
D 7 80 52799 580.18 381 373 90.4

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