ASTROSAT CZTI

Data Quality Report

Orbit 15805

Creation date: 2024-06-27T17:13:46.571744
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/AS1T02_097T01_9000002340_15805cztM0_level2.evt modeM0/AS1T02_097T01_9000002340_15805cztM0_level2_quad_clean.evt
Size (bytes)440,743,68087,425,280
Size420.3 MB 83.4 MB
Events in quadrant A3,497,148552,406
Events in quadrant B3,202,478578,937
Events in quadrant C3,073,277555,288
Events in quadrant D3,158,489532,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142773
B0132362
C0128002
D0134262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61311302.120372%
B6131260.424074%
C6131370.603490%
D6131791.288534%

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 8752 6134 78 78 0.89% 1.27%
B 8752 6134 5 5 0.06% 0.08%
C 8752 6134 0 0 0.00% 0.00%
D 8752 6134 70 70 0.80% 1.14%

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 15 239 502592 3292.98 770 756 152.4
A 7 16 28287 180.65 770 756 152.4
A 0 226 6780 39.53 770 756 152.4
B 4 173 50181 332.71 786 769 148.5
B 0 219 23330 151.91 786 769 148.5
B 0 229 22134 143.86 786 769 148.5
C 14 238 117895 677.71 749 754 172.8
C 15 127 19932 110.95 749 754 172.8
C 10 22 5568 27.85 749 754 172.8
D 7 223 212304 1174.77 746 724 180.1
D 10 70 64199 352.44 746 724 180.1
D 2 120 29147 157.81 746 724 180.1

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