ASTROSAT CZTI

Data Quality Report

Orbit 26555

Creation date: 2024-06-27T19:30:25.304326
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/AS1T03_220T01_9000003842_26555cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26555cztM0_level2_quad_clean.evt
Size (bytes)686,885,76096,632,640
Size655.1 MB 92.2 MB
Events in quadrant A3,267,988642,809
Events in quadrant B3,160,095661,518
Events in quadrant C7,777,420553,434
Events in quadrant D6,143,951601,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141280
B0137180
C0276980
D0229280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6692380.567842%
B6692550.821877%
C6692187728.048416%
D669280011.954573%

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 7452 6692 4 4 0.05% 0.06%
B 7452 6692 2 2 0.03% 0.03%
C 7452 6692 1493 1493 20.03% 22.31%
D 7451 6691 707 707 9.49% 10.57%

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 13 149568 937.55 787 773 158.7
A 5 168 77608 484.13 787 773 158.7
A 13 254 11029 64.62 787 773 158.7
B 0 229 28096 181.45 786 765 150.6
B 3 112 22292 142.92 786 765 150.6
B 12 111 18153 115.44 786 765 150.6
C 4 254 4665027 31324.29 640 645 148.9
C 3 233 500710 3358.25 640 645 148.9
C 14 238 101523 677.46 640 645 148.9
D 7 80 2121924 12186.44 728 710 174.1
D 1 52 1049637 6026.12 728 710 174.1
D 2 250 84649 482.23 728 710 174.1

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