ASTROSAT CZTI

Data Quality Report

Orbit 40143

Creation date: 2024-06-27T22:12:49.955823
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_004T01_9000005520_40143cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40143cztM0_level2_quad_clean.evt
Size (bytes)43,470,7205,518,080
Size41.5 MB 5.3 MB
Events in quadrant A268,58944,904
Events in quadrant B175,09348,492
Events in quadrant C884,3651,464
Events in quadrant D250,27739,786

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010931
B07111
C028751
D09691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35161.709402%
B35120.569801%
C35133796.011396%
D351133.703704%

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 351 351 4 4 1.14% 1.14%
B 351 351 0 0 0.00% 0.00%
C 350 350 329 329 94.00% 94.00%
D 351 351 11 11 3.13% 3.13%

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 92376 8600.28 42 41 10.7
A 9 143 4354 401.72 42 41 10.7
A 12 189 3393 312.21 42 41 10.7
B 0 245 1094 99.01 44 43 10.6
B 12 111 1072 96.94 44 43 10.6
B 11 111 926 83.19 44 43 10.6
C 9 187 791265 127575.78 18 18 6.2
C 15 214 8634 1389.19 18 18 6.2
C 0 10 6749 1085.26 18 18 6.2
D 13 249 27633 2285.37 41 40 12.1
D 12 0 18956 1566.7 41 40 12.1
D 2 249 15268 1261.25 41 40 12.1

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