ASTROSAT CZTI

Data Quality Report

Orbit 34800

Creation date: 2024-06-27T21:05:24.510425
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/AS1C07_004T01_9000004990_34800cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34800cztM0_level2_quad_clean.evt
Size (bytes)424,342,08047,707,200
Size404.7 MB 45.5 MB
Events in quadrant A2,472,197273,921
Events in quadrant B3,115,292282,277
Events in quadrant C2,858,013285,324
Events in quadrant D4,067,896253,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101713
B0122462
C0111182
D0154042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498090.180723%
B49801072.148594%
C4980470.943775%
D49802234.477912%

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 7132 4981 0 0 0.00% 0.00%
B 7132 4981 73 73 1.02% 1.47%
C 7132 4981 33 33 0.46% 0.66%
D 7132 4981 193 193 2.71% 3.87%

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 10 83 49253 392.84 623 612 123.8
A 13 6 10122 76.8 623 612 123.8
A 13 254 8972 67.52 623 612 123.8
B 5 172 248473 2089.34 622 608 118.6
B 5 255 203049 1706.44 622 608 118.6
B 0 190 107574 901.65 622 608 118.6
C 15 214 217401 1529.1 617 625 141.8
C 0 10 173438 1218.99 617 625 141.8
C 14 67 52814 368.13 617 625 141.8
D 7 223 544017 3750.51 600 585 144.9
D 8 195 391900 2700.67 600 585 144.9
D 2 250 342877 2362.34 600 585 144.9

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