ASTROSAT CZTI

Data Quality Report

Orbit 10657

Creation date: 2024-06-27T16:02:06.574315
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_191T01_9000001536_10657cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10657cztM0_level2_quad_clean.evt
Size (bytes)385,914,24065,033,280
Size368.0 MB 62.0 MB
Events in quadrant A3,036,757410,246
Events in quadrant B2,861,247419,701
Events in quadrant C2,269,787426,418
Events in quadrant D3,208,808391,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09812
B0982
C0984
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131421199
B012203694
C010536656
D013405891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45111793.968078%
B45781813.953692%
C4586491.068469%
D45371272.799207%

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 4872 4747 112 112 2.30% 2.36%
B 4872 4812 93 93 1.91% 1.93%
C 4871 4795 22 22 0.45% 0.46%
D 4872 4786 100 100 2.05% 2.09%

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 15 239 771468 6971.84 522 513 110.6
A 15 223 100623 905.31 522 513 110.6
A 4 2 98576 886.8 522 513 110.6
B 4 239 479304 4654.54 531 521 102.9
B 10 245 132941 1287.34 531 521 102.9
B 15 204 110946 1073.51 531 521 102.9
C 4 254 228418 1866.91 519 525 122.1
C 14 234 9509 73.6 519 525 122.1
C 4 175 6670 50.34 519 525 122.1
D 1 20 523957 4173.11 507 492 125.4
D 12 233 305538 2431.85 507 492 125.4
D 14 34 200132 1591.55 507 492 125.4

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