ASTROSAT CZTI

Data Quality Report

Orbit 29750

Creation date: 2024-06-27T20:07:26.729899
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_291T01_9000004278_29750cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29750cztM0_level2_quad_clean.evt
Size (bytes)324,984,96044,484,480
Size309.9 MB 42.4 MB
Events in quadrant A1,895,751276,379
Events in quadrant B3,091,359274,981
Events in quadrant C2,031,678263,684
Events in quadrant D2,559,831258,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080221
B0118991
C083171
D0102371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3867270.698216%
B38671193.077321%
C38671193.077321%
D3867711.836049%

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 4157 3869 0 0 0.00% 0.00%
B 4157 3867 6 6 0.14% 0.16%
C 4157 3867 3 3 0.07% 0.08%
D 4157 3869 39 39 0.94% 1.01%

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 13 254 7408 69.7 491 480 99.4
A 3 137 5088 46.36 491 480 99.4
A 0 226 4221 37.64 491 480 99.4
B 6 159 1094416 11535.38 485 473 94.8
B 0 229 39992 416.72 485 473 94.8
B 5 172 13769 140.2 485 473 94.8
C 10 22 85431 761.05 471 472 111.6
C 14 238 75307 670.36 471 472 111.6
C 3 233 22098 193.72 471 472 111.6
D 8 195 570831 4946.84 473 460 115.3
D 13 104 78638 678.04 473 460 115.3
D 2 250 48116 413.32 473 460 115.3

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