ASTROSAT CZTI

Data Quality Report

Orbit 13684

Creation date: 2024-06-27T16:44:31.168951
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/AS1G08_070T01_9000002028_13684cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13684cztM0_level2_quad_clean.evt
Size (bytes)616,101,12084,905,280
Size587.6 MB 81.0 MB
Events in quadrant A3,823,692520,565
Events in quadrant B4,177,094550,461
Events in quadrant C3,894,044493,425
Events in quadrant D6,237,370466,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163374
B0172343
C0163453
D0238483

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77661872.407932%
B77662513.232037%
C77661261.622457%
D77665517.095030%

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 8332 7770 1 1 0.01% 0.01%
B 8332 7770 8 8 0.10% 0.10%
C 8332 7770 5 5 0.06% 0.06%
D 8332 7770 297 297 3.56% 3.82%

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 15 69 52449 255.73 974 954 201.4
A 1 162 15163 70.56 974 954 201.4
A 0 226 8724 38.59 974 954 201.4
B 0 219 148979 783.21 978 958 189.0
B 3 64 52359 271.97 978 958 189.0
B 4 142 44176 228.68 978 958 189.0
C 3 233 207971 946.11 937 943 218.8
C 14 234 26262 115.71 937 943 218.8
C 13 61 6838 26.94 937 943 218.8
D 5 222 1095497 4838.76 921 892 226.2
D 13 122 706407 3118.77 921 892 226.2
D 8 195 495672 2187.2 921 892 226.2

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