ASTROSAT CZTI

Data Quality Report

Orbit 27010

Creation date: 2024-06-27T19:35:32.177416
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_145T01_9000003900_27010cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27010cztM0_level2_quad_clean.evt
Size (bytes)551,203,200119,131,200
Size525.7 MB 113.6 MB
Events in quadrant A5,820,720765,010
Events in quadrant B3,686,881846,028
Events in quadrant C3,310,837808,744
Events in quadrant D3,470,983771,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214320
B0149220
C0135850
D0141860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596973712.347127%
B59691171.960127%
C5970831.390285%
D5970681.139028%

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 7339 5970 596 596 8.12% 9.98%
B 7339 5969 35 35 0.48% 0.59%
C 7340 5971 1 1 0.01% 0.02%
D 7340 5971 46 46 0.63% 0.77%

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 2309035 14577.84 794 782 158.3
A 6 16 436084 2749.16 794 782 158.3
A 8 192 13627 81.12 794 782 158.3
B 0 189 386370 2473.3 833 816 155.9
B 0 219 30369 189.58 833 816 155.9
B 3 64 20981 129.36 833 816 155.9
C 14 238 132082 694.65 810 822 189.0
C 15 208 17531 88.43 810 822 189.0
C 13 61 5548 25.01 810 822 189.0
D 11 176 157889 831.67 799 784 188.9
D 2 250 142470 750.04 799 784 188.9
D 12 233 80494 421.96 799 784 188.9

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