ASTROSAT CZTI

Data Quality Report

Orbit 28400

Creation date: 2024-06-27T19:51:22.089240
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/AS1A10_058T13_9000004088_28400cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28400cztM0_level2_quad_clean.evt
Size (bytes)489,453,12096,989,760
Size466.8 MB 92.5 MB
Events in quadrant A3,241,081637,012
Events in quadrant B3,498,321663,448
Events in quadrant C3,267,424617,391
Events in quadrant D4,394,423585,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133600
B0141540
C0133190
D0171350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224480.771208%
B6224711.140746%
C6224610.980077%
D6223871.398040%

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 7599 6225 1 1 0.01% 0.02%
B 7599 6225 9 9 0.12% 0.14%
C 7599 6225 0 0 0.00% 0.00%
D 7598 6224 92 92 1.21% 1.48%

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 9992 55.12 836 821 166.4
A 8 192 9051 49.46 836 821 166.4
A 3 137 7722 41.47 836 821 166.4
B 10 245 152921 956.58 841 822 159.0
B 10 246 30164 184.54 841 822 159.0
B 12 111 18536 111.41 841 822 159.0
C 14 238 131744 696.85 804 813 187.9
C 7 220 7354 34.81 804 813 187.9
C 13 61 5567 25.3 804 813 187.9
D 8 195 782089 4105.1 795 775 190.3
D 1 52 402162 2108.93 795 775 190.3
D 2 250 87964 458.1 795 775 190.3

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