ASTROSAT CZTI

Data Quality Report

Orbit 25893

Creation date: 2024-06-27T19:22:32.674298
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/AS1A07_068T01_9000003756_25893cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25893cztM0_level2_quad_clean.evt
Size (bytes)463,691,520113,569,920
Size442.2 MB 108.3 MB
Events in quadrant A3,729,027775,526
Events in quadrant B3,523,370768,725
Events in quadrant C3,129,881730,729
Events in quadrant D3,249,614741,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152610
B0143260
C0131710
D0135050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046771.273569%
B60551061.750619%
C6051781.289043%
D6055621.023947%

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 7294 6069 13 13 0.18% 0.21%
B 7294 6080 55 55 0.75% 0.90%
C 7294 6075 0 0 0.00% 0.00%
D 7294 6082 20 20 0.27% 0.33%

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 0 13 605535 3755.19 807 795 161.0
A 13 254 10325 59.18 807 795 161.0
A 8 192 8873 50.16 807 795 161.0
B 10 245 322103 2176.0 784 768 147.7
B 0 219 89247 599.16 784 768 147.7
B 12 111 17113 110.68 784 768 147.7
C 14 238 122283 695.2 754 759 174.8
C 3 233 69253 391.83 754 759 174.8
C 13 61 5139 25.06 754 759 174.8
D 1 52 131658 699.45 782 764 187.1
D 7 80 131611 699.2 782 764 187.1
D 2 234 24664 127.71 782 764 187.1

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