ASTROSAT CZTI

Data Quality Report

Orbit 26921

Creation date: 2024-06-27T19:34:31.049387
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/AS1A09_134T01_9000003896_26921cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26921cztM0_level2_quad_clean.evt
Size (bytes)812,998,08081,129,600
Size775.3 MB 77.4 MB
Events in quadrant A13,460,881297,006
Events in quadrant B3,749,681596,516
Events in quadrant C3,271,044574,164
Events in quadrant D3,714,406548,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442500
B0150420
C0134790
D0151380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293483076.751947%
B62931412.240585%
C6293641.017003%
D6292831.319135%

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 7533 6293 4324 4324 57.40% 68.71%
B 7533 6293 86 86 1.14% 1.37%
C 7533 6293 5 5 0.07% 0.08%
D 7532 6293 65 65 0.86% 1.03%

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 14 235 11275170 106045.81 531 523 106.3
A 0 13 86150 805.38 531 523 106.3
A 8 192 38185 354.24 531 523 106.3
B 0 189 225657 1484.51 816 797 151.5
B 10 246 150648 989.3 816 797 151.5
B 3 64 46768 303.5 816 797 151.5
C 14 238 128955 706.53 786 792 181.4
C 0 207 57953 315.11 786 792 181.4
C 15 208 15365 80.34 786 792 181.4
D 7 80 290804 1516.81 775 757 191.2
D 2 250 265017 1381.96 775 757 191.2
D 1 52 64695 334.37 775 757 191.2

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