ASTROSAT CZTI

Data Quality Report

Orbit 20220806_A09_026T03_9000005280_level2

Creation date: 2026-01-04T01:37:24.423921
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_026T03_9000005280cztM0_level2.fits modeM0/AS1A09_026T03_9000005280cztM0_level2_quad_clean.evt
Size (bytes)112,714,560115,773,120
Size107.5 MB 110.4 MB
Events in quadrant A702,678773,595
Events in quadrant B644,714700,758
Events in quadrant C685,536715,994
Events in quadrant D490,832426,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269920
B0382280
C0286830
D0553800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12846410.319165%
B1284610448.127043%
C128461661.292231%
D12846313524.404484%

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 15801 12845 0 0 0.00% 0.00%
B 15801 12843 0 0 0.00% 0.00%
C 15801 12840 0 0 0.00% 0.00%
D 15801 12678 0 0 0.00% 0.00%

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 9 19 606 9.07 183 172 47.8
A 7 110 595 8.84 183 172 47.8
A 0 29 524 7.36 183 172 47.8
B 2 9 595 12.3 171 163 35.1
B 3 80 518 10.11 171 163 35.1
B 5 128 461 8.49 171 163 35.1
C 3 203 544 7.75 181 170 48.2
C 3 202 536 7.59 181 170 48.2
C 3 234 511 7.07 181 170 48.2
D 7 3 364 6.05 140 128 39.0
D 10 113 361 5.97 140 128 39.0
D 4 160 356 5.84 140 128 39.0

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