ASTROSAT CZTI

Data Quality Report

Orbit 41889

Creation date: 2024-06-27T22:34:02.052814
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/AS1A12_099T01_9000005716_41889cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41889cztM0_level2_quad_clean.evt
Size (bytes)314,951,04063,616,320
Size300.4 MB 60.7 MB
Events in quadrant A2,717,136427,968
Events in quadrant B1,922,783449,304
Events in quadrant C2,171,638412,700
Events in quadrant D4,530,400349,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105711
B084821
C090241
D0162581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40581223.006407%
B4058120.295712%
C40581243.055692%
D405862515.401676%

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 5581 4059 114 114 2.04% 2.81%
B 5581 4059 6 6 0.11% 0.15%
C 5581 4059 124 124 2.22% 3.05%
D 5581 4059 670 670 12.01% 16.51%

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 669798 7293.53 439 428 91.8
A 10 83 337476 3672.51 439 428 91.8
A 14 250 6981 71.4 439 428 91.8
B 5 255 126878 1445.94 441 427 87.5
B 0 190 42367 479.57 441 427 87.5
B 7 202 12148 134.02 441 427 87.5
C 0 10 340010 3350.83 428 429 101.3
C 15 214 158909 1563.81 428 429 101.3
C 0 15 3590 31.19 428 429 101.3
D 12 79 2465739 24009.49 412 400 102.7
D 12 6 219447 2133.26 412 400 102.7
D 13 249 109150 1059.1 412 400 102.7

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