ASTROSAT CZTI

Data Quality Report

Orbit 25490

Creation date: 2024-06-27T19:18:14.697865
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/AS1C05_012T07_9000003718_25490cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25490cztM0_level2_quad_clean.evt
Size (bytes)434,306,880133,257,600
Size414.2 MB 127.1 MB
Events in quadrant A3,079,958928,956
Events in quadrant B3,107,943942,911
Events in quadrant C3,054,507877,045
Events in quadrant D3,498,910864,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126810
B0127570
C0126820
D0140270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6054751.238850%
B6055871.436829%
C60541061.750908%
D60541352.229931%

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 7369 6055 0 0 0.00% 0.00%
B 7370 6056 0 0 0.00% 0.00%
C 7369 6055 0 0 0.00% 0.00%
D 7369 6055 71 71 0.96% 1.17%

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 8966 51.94 799 786 157.5
A 0 226 7013 39.54 799 786 157.5
A 3 137 6617 37.02 799 786 157.5
B 0 229 19286 128.35 788 771 144.3
B 12 111 16968 112.28 788 771 144.3
B 11 111 15160 99.75 788 771 144.3
C 14 238 123455 719.43 745 750 170.6
C 0 239 14269 79.26 745 750 170.6
C 0 10 8233 43.87 745 750 170.6
D 2 244 261622 1435.94 759 736 181.7
D 8 195 215665 1182.99 759 736 181.7
D 1 52 67275 366.24 759 736 181.7

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