ASTROSAT CZTI

Data Quality Report

Orbit 48137

Creation date: 2024-08-24T09:50:35.066028
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/AS1C09_009T01_9000006406_48137cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48137cztM0_level2_quad_clean.evt
Size (bytes)408,078,72085,904,640
Size389.2 MB 81.9 MB
Events in quadrant A6,770,494737,402
Events in quadrant B1,100,23643,527
Events in quadrant C3,284,130713,887
Events in quadrant D3,443,461654,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255854
B068331
C0142942
D0146554

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64311732.690095%
B64336433100.000000%
C64321662.580846%
D64311141.772664%

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 7252 6433 14 14 0.19% 0.22%
B 7252 6416 0 0 0.00% 0.00%
C 7253 6434 91 91 1.25% 1.41%
D 7253 6433 75 75 1.03% 1.17%

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 3832829 24856.96 732 716 154.2
A 0 31 71983 462.27 732 716 154.2
A 13 248 34631 219.99 732 716 154.2
B 2 177 889986 79160.2 45 44 11.2
B 0 200 17077 1515.08 45 44 11.2
B 4 21 10348 916.54 45 44 11.2
C 10 187 256819 1505.89 710 713 170.1
C 12 2 221469 1298.03 710 713 170.1
C 12 249 24764 141.42 710 713 170.1
D 12 2 364740 2021.03 715 693 180.1
D 6 239 101057 557.18 715 693 180.1
D 2 165 49072 268.58 715 693 180.1

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