ASTROSAT CZTI

Data Quality Report

Orbit 24428

Creation date: 2024-06-27T19:05:55.093346
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_054T01_9000003604_24428cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24428cztM0_level2_quad_clean.evt
Size (bytes)1,585,765,440258,471,360
Size1.5 GB 246.5 MB
Events in quadrant A6,985,5871,923,090
Events in quadrant B7,253,2481,952,713
Events in quadrant C7,261,1691,865,308
Events in quadrant D25,478,8101,015,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314650
B0318520
C0318570
D0862300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154861510.975074%
B154871410.910441%
C154871721.110609%
D15487806752.088849%

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 16521 15489 10 10 0.06% 0.06%
B 16522 15490 3 3 0.02% 0.02%
C 16522 15490 13 13 0.08% 0.08%
D 16521 15488 7606 7606 46.04% 49.11%

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 4 2 90543 247.72 1788 1749 358.4
A 13 254 24934 64.68 1788 1749 358.4
A 3 137 16062 39.93 1788 1749 358.4
B 0 190 96186 279.07 1787 1740 338.4
B 3 64 86508 250.48 1787 1740 338.4
B 12 17 66929 192.62 1787 1740 338.4
C 14 238 272118 676.52 1725 1732 399.7
C 2 16 232286 576.86 1725 1732 399.7
C 3 233 33854 80.37 1725 1732 399.7
D 9 35 19514686 75896.91 1052 1020 257.1
D 12 218 1004597 3903.34 1052 1020 257.1
D 1 52 590063 2291.04 1052 1020 257.1

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