ASTROSAT CZTI

Data Quality Report

Orbit 22699

Creation date: 2024-06-27T18:44:34.531781
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/AS1A08_007T01_9000003362_22699cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22699cztM0_level2_quad_clean.evt
Size (bytes)497,004,48083,289,600
Size474.0 MB 79.4 MB
Events in quadrant A3,140,623534,172
Events in quadrant B3,302,598536,058
Events in quadrant C3,148,605509,905
Events in quadrant D5,018,622488,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133461
B0137571
C0134251
D0192261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501891.369020%
B65011031.584372%
C65011101.692047%
D65024296.597970%

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 7256 6502 0 0 0.00% 0.00%
B 7256 6502 2 2 0.03% 0.03%
C 7256 6502 0 0 0.00% 0.00%
D 7257 6503 296 296 4.08% 4.55%

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 11991 68.99 811 796 162.3
A 0 226 7164 39.25 811 796 162.3
A 3 137 6303 33.94 811 796 162.3
B 0 190 37940 241.99 808 789 153.5
B 0 230 30499 193.52 808 789 153.5
B 0 228 23315 146.73 808 789 153.5
C 14 238 122435 675.1 772 776 180.2
C 10 22 17240 91.36 772 776 180.2
C 13 61 5431 25.83 772 776 180.2
D 1 52 621906 3331.15 771 750 186.5
D 13 172 554796 2971.25 771 750 186.5
D 12 33 303356 1622.82 771 750 186.5

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