ASTROSAT CZTI

Data Quality Report

Orbit 04981

Creation date: 2024-06-27T14:49:57.873019
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/AS1T01_135T01_9000000632_04981cztM0_level2.evt modeM0/AS1T01_135T01_9000000632_04981cztM0_level2_quad_clean.evt
Size (bytes)245,327,04028,998,720
Size234.0 MB 27.7 MB
Events in quadrant A1,445,105178,432
Events in quadrant B1,497,901179,286
Events in quadrant C1,481,906171,757
Events in quadrant D2,807,638142,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060982
B062261
C062731
D0102441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28721073.725627%
B28721154.004178%
C28721113.864903%
D287257219.916435%

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 3797 2872 1 1 0.03% 0.03%
B 3797 2872 0 0 0.00% 0.00%
C 3797 2872 11 11 0.29% 0.38%
D 3797 2872 492 492 12.96% 17.13%

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 0 50 11142 138.78 371 363 77.7
A 8 15 5042 60.24 371 363 77.7
A 12 194 3638 42.16 371 363 77.7
B 0 219 39565 531.15 374 364 73.8
B 12 111 6813 87.38 374 364 73.8
B 15 54 6141 78.27 374 364 73.8
C 1 16 79381 925.9 357 358 85.3
C 10 21 9688 109.32 357 358 85.3
C 13 61 2941 30.26 357 358 85.3
D 4 95 1402647 16880.05 336 326 83.1
D 13 235 60877 728.87 336 326 83.1
D 2 234 15308 180.34 336 326 83.1

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