ASTROSAT CZTI

Data Quality Report

Orbit 06716

Creation date: 2024-06-27T15:10:43.756800
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/AS1C02_003T01_9000000924_06716cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06716cztM0_level2_quad_clean.evt
Size (bytes)529,977,600102,456,000
Size505.4 MB 97.7 MB
Events in quadrant A3,712,266675,710
Events in quadrant B3,132,202699,350
Events in quadrant C2,975,054679,172
Events in quadrant D5,788,382593,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154853
B0136432
C0133922
D0218712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65192123.252033%
B6519410.628931%
C6519100.153398%
D651994114.434729%

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 7844 6520 78 78 0.99% 1.20%
B 7844 6520 7 7 0.09% 0.11%
C 7844 6520 1 1 0.01% 0.02%
D 7844 6520 922 922 11.75% 14.14%

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 14 111 675055 4361.59 766 751 154.6
A 8 15 42991 273.22 766 751 154.6
A 13 251 29835 188.12 766 751 154.6
B 3 220 39735 260.69 789 772 149.5
B 10 252 19070 122.43 789 772 149.5
B 12 111 14815 93.96 789 772 149.5
C 10 22 15419 84.03 755 759 174.5
C 9 247 9394 49.49 755 759 174.5
C 13 61 5964 29.83 755 759 174.5
D 2 33 2662292 15376.73 704 682 173.1
D 12 221 167627 964.48 704 682 173.1
D 8 195 135303 777.73 704 682 173.1

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