ASTROSAT CZTI

Data Quality Report

Orbit 27088

Creation date: 2024-06-27T19:36:23.607640
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_231T01_9000003910_27088cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27088cztM0_level2_quad_clean.evt
Size (bytes)918,737,280147,726,720
Size876.2 MB 140.9 MB
Events in quadrant A7,078,800910,653
Events in quadrant B7,243,363927,600
Events in quadrant C6,118,050900,344
Events in quadrant D6,537,257870,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289200
B0294130
C0259030
D0275920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125094473.573427%
B125103742.989608%
C125103102.478018%
D125102491.990408%

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 13009 12512 87 87 0.67% 0.70%
B 13010 12513 14 14 0.11% 0.11%
C 13010 12513 0 0 0.00% 0.00%
D 13010 12513 52 52 0.40% 0.42%

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 980769 3136.13 1545 1513 312.3
A 12 189 118720 375.36 1545 1513 312.3
A 13 254 20918 62.15 1545 1513 312.3
B 0 189 764777 2555.23 1543 1504 298.7
B 3 112 358859 1196.33 1543 1504 298.7
B 0 219 40025 128.96 1543 1504 298.7
C 14 238 235024 661.39 1500 1510 353.1
C 15 208 21116 55.53 1500 1510 353.1
C 3 233 11291 27.7 1500 1510 353.1
D 1 52 403822 1106.22 1510 1470 363.7
D 2 250 182587 497.96 1510 1470 363.7
D 7 38 118012 320.42 1510 1470 363.7

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