ASTROSAT CZTI

Data Quality Report

Orbit 21752

Creation date: 2024-06-27T18:31:48.164624
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_005T01_9000003224_21752cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21752cztM0_level2_quad_clean.evt
Size (bytes)718,030,08061,666,560
Size684.8 MB 58.8 MB
Events in quadrant A2,983,124392,951
Events in quadrant B3,598,295395,960
Events in quadrant C3,030,586375,339
Events in quadrant D11,725,713281,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127431
B0145931
C0128861
D0389571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6028500.829463%
B60281312.173192%
C6028701.161248%
D6028368261.081619%

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 7123 6028 0 0 0.00% 0.00%
B 7123 6028 45 45 0.63% 0.75%
C 7123 6029 0 0 0.00% 0.00%
D 7123 6028 3073 3073 43.14% 50.98%

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 11031 66.59 771 755 154.3
A 4 2 7945 46.59 771 755 154.3
A 0 226 6778 39.03 771 755 154.3
B 3 64 151088 1024.23 770 753 146.8
B 0 228 82188 554.82 770 753 146.8
B 5 172 72799 490.85 770 753 146.8
C 14 238 116823 672.54 737 743 172.6
C 10 22 39606 225.16 737 743 172.6
C 13 61 5196 25.8 737 743 172.6
D 7 238 9093184 70301.33 528 513 129.3
D 1 52 249958 1928.62 528 513 129.3
D 2 136 206328 1591.29 528 513 129.3

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