ASTROSAT CZTI

Data Quality Report

Orbit 27551

Creation date: 2024-06-27T19:41:26.418606
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/AS1C05_019T04_9000003956_27551cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27551cztM0_level2_quad_clean.evt
Size (bytes)576,250,560121,170,240
Size549.6 MB 115.6 MB
Events in quadrant A3,428,514810,887
Events in quadrant B3,783,340821,935
Events in quadrant C5,018,160765,097
Events in quadrant D4,719,175755,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151530
B0159080
C0197550
D0189630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74011171.580867%
B74011562.107823%
C74024946.673872%
D74023454.660902%

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 7561 7401 0 0 0.00% 0.00%
B 7561 7401 12 12 0.16% 0.16%
C 7562 7402 243 243 3.21% 3.28%
D 7562 7402 217 217 2.87% 2.93%

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 12360 64.39 888 870 178.4
A 3 137 8778 44.32 888 870 178.4
A 0 226 7486 37.08 888 870 178.4
B 10 245 186243 1109.46 876 852 167.1
B 3 64 81351 481.74 876 852 167.1
B 15 32 43146 253.11 876 852 167.1
C 7 221 1486500 7524.67 838 841 197.4
C 14 238 134337 676.14 838 841 197.4
C 10 22 62118 310.36 838 841 197.4
D 1 52 1252480 6140.04 852 827 203.9
D 2 250 163579 798.39 852 827 203.9
D 2 234 34777 166.54 852 827 203.9

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