ASTROSAT CZTI

Data Quality Report

Orbit 30957

Creation date: 2024-06-27T20:21:37.702921
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_058T11_9000004474_30957cztM0_level2.evt modeM0/AS1A10_058T11_9000004474_30957cztM0_level2_quad_clean.evt
Size (bytes)857,718,720104,664,960
Size818.0 MB 99.8 MB
Events in quadrant A4,595,699650,708
Events in quadrant B7,380,588643,564
Events in quadrant C6,080,916619,268
Events in quadrant D7,291,395610,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195804
B0286144
C0243215
D0279074

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92972512.699796%
B92973904.194902%
C92964614.959122%
D92964675.023666%

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 27286 9298 0 0 0.00% 0.00%
B 27286 9298 6 6 0.02% 0.06%
C 27286 9297 55 55 0.20% 0.59%
D 27286 9298 206 206 0.75% 2.22%

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 15411 59.22 1191 1163 240.6
A 3 137 12165 45.73 1191 1163 240.6
A 0 226 9790 35.86 1191 1163 240.6
B 6 159 2569690 11464.05 1164 1133 224.1
B 0 183 64918 284.69 1164 1133 224.1
B 0 190 50147 218.76 1164 1133 224.1
C 3 233 1105720 4163.48 1126 1134 265.3
C 0 10 383904 1442.76 1126 1134 265.3
C 14 238 179448 672.11 1126 1134 265.3
D 13 174 2173714 7947.94 1147 1118 273.4
D 8 195 411210 1500.23 1147 1118 273.4
D 2 250 246807 898.79 1147 1118 273.4

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