ASTROSAT CZTI

Data Quality Report

Orbit 08351

Creation date: 2024-06-27T15:31:27.251237
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/AS1G07_029T01_9000001158_08351cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08351cztM0_level2_quad_clean.evt
Size (bytes)271,278,72040,775,040
Size258.7 MB 38.9 MB
Events in quadrant A2,054,098242,198
Events in quadrant B2,030,885246,461
Events in quadrant C1,923,749236,943
Events in quadrant D1,935,530228,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084111
B083661
C081771
D083371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3971401.007303%
B3971421.057668%
C3971180.453286%
D3971220.554017%

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 5266 3972 4 4 0.08% 0.10%
B 5266 3972 1 1 0.02% 0.03%
C 5266 3972 0 0 0.00% 0.00%
D 5266 3972 4 4 0.08% 0.10%

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 34899 329.88 517 507 104.3
A 14 111 30258 285.36 517 507 104.3
A 0 226 4858 41.73 517 507 104.3
B 0 214 14650 143.64 518 506 98.5
B 12 111 10487 101.36 518 506 98.5
B 11 111 8615 82.35 518 506 98.5
C 13 61 3764 28.51 493 497 114.6
C 3 202 1253 6.6 493 497 114.6
C -1 -1 -1 -1.0 493 497 114.6
D 12 233 19378 159.58 491 480 118.4
D 2 14 15520 127.0 491 480 118.4
D 2 234 14065 114.71 491 480 118.4

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