ASTROSAT CZTI

Data Quality Report

Orbit 05812

Creation date: 2024-06-27T14:59:27.672722
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_197T01_9000000748_05812cztM0_level2.evt modeM0/AS1A02_197T01_9000000748_05812cztM0_level2_quad_clean.evt
Size (bytes)362,672,64055,776,960
Size345.9 MB 53.2 MB
Events in quadrant A3,293,491326,454
Events in quadrant B2,404,368335,036
Events in quadrant C2,409,351330,729
Events in quadrant D2,510,855320,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139229
B01097413
C01117013
D0114743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5364400.745712%
B5361300.559597%
C5362561.044386%
D5366340.633619%

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 6127 5368 0 0 0.00% 0.00%
B 6127 5368 0 0 0.00% 0.00%
C 6127 5368 18 18 0.29% 0.34%
D 6127 5368 8 8 0.13% 0.15%

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 15 236 977247 7867.73 600 585 124.1
A 0 226 5931 43.07 600 585 124.1
A 12 194 5789 41.92 600 585 124.1
B 10 16 13193 106.44 611 596 118.3
B 12 111 11306 90.49 611 596 118.3
B 15 204 9584 75.94 611 596 118.3
C 9 16 109545 791.16 588 589 137.7
C 13 61 4768 30.34 588 589 137.7
C 8 222 3675 22.41 588 589 137.7
D 8 230 146478 1024.27 587 569 142.5
D 1 239 55484 385.5 587 569 142.5
D 9 85 29228 201.18 587 569 142.5

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