ASTROSAT CZTI

Data Quality Report

Orbit 41921

Creation date: 2024-06-27T22:34:30.201312
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/AS1T05_118T01_9000005718_41921cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41921cztM0_level2_quad_clean.evt
Size (bytes)641,557,44069,304,320
Size611.8 MB 66.1 MB
Events in quadrant A3,966,781548,975
Events in quadrant B2,654,025598,307
Events in quadrant C3,122,778548,871
Events in quadrant D13,594,93933,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152053
B0115292
C0125632
D0437222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52663486.608431%
B5266270.512723%
C52662594.918344%
D5266500595.043676%

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 7089 5267 284 284 4.01% 5.39%
B 7089 5267 16 16 0.23% 0.30%
C 7089 5267 257 257 3.63% 4.88%
D 7089 5267 4574 4574 64.52% 86.84%

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 14 24 1240849 10821.6 557 546 114.6
A 10 83 529034 4611.04 557 546 114.6
A 3 1 13900 116.51 557 546 114.6
B 0 190 117618 1060.67 571 555 110.4
B 5 255 91449 823.56 571 555 110.4
B 0 156 47296 423.5 571 555 110.4
C 0 10 762717 6034.02 540 544 126.3
C 15 214 206524 1630.71 540 544 126.3
C 0 15 38780 302.71 540 544 126.3
D 12 79 11206000 265121.13 167 162 42.3
D 13 249 1302140 30803.75 167 162 42.3
D 2 249 164168 3880.25 167 162 42.3

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