ASTROSAT CZTI

Data Quality Report

Orbit 24098

Creation date: 2024-06-27T19:02:05.667212
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/AS1T03_182T01_9000003560_24098cztM0_level2.evt modeM0/AS1T03_182T01_9000003560_24098cztM0_level2_quad_clean.evt
Size (bytes)1,317,009,600239,685,120
Size1.2 GB 228.6 MB
Events in quadrant A8,382,5961,536,140
Events in quadrant B8,852,2461,542,541
Events in quadrant C8,823,9351,498,143
Events in quadrant D12,628,8931,460,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362823
B0375173
C0366923
D0496233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17740680.383315%
B177411901.070966%
C177411590.896229%
D177417894.447325%

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 19725 17742 0 0 0.00% 0.00%
B 19726 17743 59 59 0.30% 0.33%
C 19726 17744 1 1 0.01% 0.01%
D 19726 17743 563 563 2.85% 3.17%

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 32054 68.72 2159 2111 435.7
A 2 250 30348 64.81 2159 2111 435.7
A 6 16 27949 59.3 2159 2111 435.7
B 0 245 167156 404.19 2148 2090 408.4
B 15 32 78445 186.97 2148 2090 408.4
B 5 172 55513 130.81 2148 2090 408.4
C 14 238 324792 656.92 2081 2093 491.2
C 7 247 229042 462.0 2081 2093 491.2
C 0 239 85348 169.48 2081 2093 491.2
D 12 218 2248161 4461.13 2070 2012 503.5
D 8 195 1205369 2390.01 2070 2012 503.5
D 11 176 676094 1338.81 2070 2012 503.5

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