ASTROSAT CZTI

Data Quality Report

Orbit 29240

Creation date: 2024-06-27T20:01:51.737483
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/AS1T03_272T01_9000004204_29240cztM0_level2.evt modeM0/AS1T03_272T01_9000004204_29240cztM0_level2_quad_clean.evt
Size (bytes)941,244,48060,785,280
Size897.6 MB 58.0 MB
Events in quadrant A3,141,577398,472
Events in quadrant B3,843,800397,587
Events in quadrant C8,430,755351,702
Events in quadrant D12,691,642277,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128112
B0151951
C0292041
D0417801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932801.348618%
B59332464.146300%
C5933125221.102309%
D5933391565.986853%

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 7252 5933 0 0 0.00% 0.00%
B 7253 5934 101 101 1.39% 1.70%
C 7253 5934 661 661 9.11% 11.14%
D 7253 5934 3732 3732 51.45% 62.89%

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 11206 65.17 814 802 159.6
A 0 226 7060 39.2 814 802 159.6
A 3 137 6965 38.61 814 802 159.6
B 0 229 542726 3730.42 790 775 145.3
B 10 246 58730 398.92 790 775 145.3
B 0 189 43273 292.53 790 775 145.3
C 3 233 5422463 32742.41 730 735 165.6
C 14 238 120264 721.85 730 735 165.6
C 15 208 23999 140.49 730 735 165.6
D 7 223 8925954 65129.69 590 576 137.0
D 1 52 916636 6684.61 590 576 137.0
D 8 195 405423 2954.22 590 576 137.0

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