ASTROSAT CZTI

Data Quality Report

Orbit 28515

Creation date: 2024-06-27T19:52:44.098878
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/AS1A10_058T09_9000004100_28515cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28515cztM0_level2_quad_clean.evt
Size (bytes)585,872,640106,427,520
Size558.7 MB 101.5 MB
Events in quadrant A3,483,153734,598
Events in quadrant B4,621,231717,469
Events in quadrant C3,440,423692,111
Events in quadrant D5,765,631632,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143641
B0179431
C0141991
D0214651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392861.345432%
B63934096.397622%
C63931071.673706%
D63936009.385265%

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 7682 6392 0 0 0.00% 0.00%
B 7683 6393 254 254 3.31% 3.97%
C 7683 6393 0 0 0.00% 0.00%
D 7682 6392 609 609 7.93% 9.53%

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 15 174 43787 246.98 879 863 173.8
A 0 247 28080 156.6 879 863 173.8
A 13 254 11029 58.49 879 863 173.8
B 10 245 564459 3545.69 853 835 159.0
B 4 171 476138 2990.08 853 835 159.0
B 0 230 147470 922.46 853 835 159.0
C 14 238 137069 714.35 823 829 190.7
C 3 233 69582 360.49 823 829 190.7
C 7 247 13651 67.23 823 829 190.7
D 8 195 1124577 5870.05 807 787 191.4
D 12 233 1047573 5467.83 807 787 191.4
D 1 52 432260 2253.77 807 787 191.4

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