ASTROSAT CZTI

Data Quality Report

Orbit 26491

Creation date: 2024-06-27T19:29:42.553155
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_038T06_9000003832_26491cztM0_level2.evt modeM0/AS1A09_038T06_9000003832_26491cztM0_level2_quad_clean.evt
Size (bytes)571,161,600132,030,720
Size544.7 MB 125.9 MB
Events in quadrant A3,085,060917,805
Events in quadrant B3,233,007938,188
Events in quadrant C3,272,029892,073
Events in quadrant D7,271,082801,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133350
B0136510
C0136910
D0260050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6444340.527623%
B6444640.993172%
C6444831.288020%
D6444114517.768467%

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 7519 6445 0 0 0.00% 0.00%
B 7519 6445 4 4 0.05% 0.06%
C 7519 6445 1 1 0.01% 0.02%
D 7519 6444 977 977 12.99% 15.16%

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 11278 66.42 799 783 158.0
A 3 137 7140 40.23 799 783 158.0
A 0 226 6951 39.03 799 783 158.0
B 0 190 54094 359.74 802 783 148.2
B 12 111 17408 112.19 802 783 148.2
B 11 111 15479 99.17 802 783 148.2
C 14 238 124681 696.22 769 775 178.0
C 3 233 108724 606.56 769 775 178.0
C 4 254 32070 175.85 769 775 178.0
D 1 52 2467267 14460.75 718 700 170.6
D 7 80 1627017 9534.61 718 700 170.6
D 12 233 360324 2108.37 718 700 170.6

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