ASTROSAT CZTI

Data Quality Report

Orbit 23897

Creation date: 2024-06-27T18:59:52.296356
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_142T01_9000003540_23897cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23897cztM0_level2_quad_clean.evt
Size (bytes)506,574,72060,842,880
Size483.1 MB 58.0 MB
Events in quadrant A3,293,873370,208
Events in quadrant B3,392,972372,555
Events in quadrant C3,606,393343,849
Events in quadrant D4,646,749341,685

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134891
B0137091
C0143321
D0177501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5923701.181834%
B5924831.401080%
C59242384.017556%
D59245048.507765%

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 7273 5924 0 0 0.00% 0.00%
B 7274 5925 5 5 0.07% 0.08%
C 7274 5925 66 66 0.91% 1.11%
D 7273 5924 330 330 4.54% 5.57%

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 10582 58.0 854 840 168.0
A 0 226 7618 40.35 854 840 168.0
A 3 137 6533 33.89 854 840 168.0
B 15 33 48281 303.21 842 825 156.5
B 0 190 20054 122.86 842 825 156.5
B 0 228 18310 111.72 842 825 156.5
C 7 247 281895 1573.81 786 795 178.6
C 0 10 132419 736.93 786 795 178.6
C 14 238 128640 715.77 786 795 178.6
D 12 218 1431537 7633.87 781 760 187.4
D 1 52 73464 387.91 781 760 187.4
D 12 250 53469 281.23 781 760 187.4

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