ASTROSAT CZTI

Data Quality Report

Orbit 24038

Creation date: 2024-06-27T19:01:25.548227
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_165T01_9000003558_24038cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24038cztM0_level2_quad_clean.evt
Size (bytes)481,872,960125,498,880
Size459.5 MB 119.7 MB
Events in quadrant A2,972,412855,631
Events in quadrant B3,587,361862,865
Events in quadrant C3,110,579838,682
Events in quadrant D4,499,206807,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127951
B0145361
C0130911
D0176731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243190.304341%
B62441642.626521%
C6244631.008969%
D6244961.537476%

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 7303 6244 0 0 0.00% 0.00%
B 7304 6245 92 92 1.26% 1.47%
C 7304 6245 0 0 0.00% 0.00%
D 7304 6245 52 52 0.71% 0.83%

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 9824 58.95 770 752 153.9
A 0 226 6729 38.84 770 752 153.9
A 3 137 6377 36.55 770 752 153.9
B 0 197 507985 3601.75 761 745 140.8
B 7 202 53011 371.12 761 745 140.8
B 0 230 17734 120.63 761 745 140.8
C 14 238 119756 685.99 751 759 173.5
C 7 247 53873 306.19 751 759 173.5
C 2 16 6584 33.58 751 759 173.5
D 8 195 1290008 7094.14 754 731 181.7
D 12 218 151014 826.92 754 731 181.7
D 2 82 109905 600.72 754 731 181.7

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