ASTROSAT CZTI

Data Quality Report

Orbit 27579

Creation date: 2024-06-27T19:41:54.397257
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_259T01_9000003972_27579cztM0_level2.evt modeM0/AS1T03_259T01_9000003972_27579cztM0_level2_quad_clean.evt
Size (bytes)656,766,720100,391,040
Size626.3 MB 95.7 MB
Events in quadrant A4,323,663616,435
Events in quadrant B4,404,373627,106
Events in quadrant C4,324,564611,454
Events in quadrant D6,249,275582,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185120
B0185660
C0182590
D0244120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86753934.530259%
B86764465.140618%
C86753914.507205%
D86755766.639769%

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 9105 8676 43 43 0.47% 0.50%
B 9106 8677 11 11 0.12% 0.13%
C 9105 8676 6 6 0.07% 0.07%
D 9105 8676 266 266 2.92% 3.07%

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 15 169 144174 661.33 1076 1052 216.4
A 14 235 19819 86.72 1076 1052 216.4
A 13 254 15017 64.53 1076 1052 216.4
B 10 245 63785 299.54 1073 1040 209.5
B 3 64 54361 254.55 1073 1040 209.5
B 15 222 48238 225.32 1073 1040 209.5
C 14 238 165164 674.73 1042 1047 243.2
C 14 67 48655 195.73 1042 1047 243.2
C 2 16 28877 114.42 1042 1047 243.2
D 1 52 1738122 7104.23 1035 1005 244.5
D 7 69 239763 976.44 1035 1005 244.5
D 6 112 232769 947.84 1035 1005 244.5

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