ASTROSAT CZTI

Data Quality Report

Orbit 27246

Creation date: 2024-06-27T19:38:10.196113
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_243T01_9000003918_27246cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27246cztM0_level2_quad_clean.evt
Size (bytes)559,635,840109,886,400
Size533.7 MB 104.8 MB
Events in quadrant A3,871,512713,968
Events in quadrant B4,154,645718,106
Events in quadrant C3,749,762688,688
Events in quadrant D4,648,768670,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164850
B0172400
C0160730
D0191000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77121451.880187%
B77132503.241281%
C77121692.191390%
D77122072.684129%

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 8407 7716 13 13 0.15% 0.17%
B 8408 7717 30 30 0.36% 0.39%
C 8407 7716 0 0 0.00% 0.00%
D 8407 7716 94 94 1.12% 1.22%

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 13 248 117490 598.64 963 942 194.7
A 0 13 16815 81.53 963 942 194.7
A 8 192 12897 61.41 963 942 194.7
B 15 33 219167 1192.16 957 934 183.1
B 3 64 77055 415.83 957 934 183.1
B 5 172 58512 314.54 957 934 183.1
C 14 238 146659 670.37 920 925 217.4
C 15 208 14506 62.47 920 925 217.4
C 13 61 6288 24.67 920 925 217.4
D 1 52 688483 2815.73 915 897 244.2
D 2 250 206916 843.67 915 897 244.2
D 12 233 135785 552.38 915 897 244.2

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