ASTROSAT CZTI

Data Quality Report

Orbit 15474

Creation date: 2024-06-27T17:09:01.030271
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/AS1A04_203T01_9000002284_15474cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15474cztM0_level2_quad_clean.evt
Size (bytes)493,879,68069,477,120
Size471.0 MB 66.3 MB
Events in quadrant A3,418,267423,224
Events in quadrant B3,568,289425,183
Events in quadrant C3,414,794406,431
Events in quadrant D4,121,465402,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140073
B0145692
C0138162
D0163812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63971482.313584%
B63971582.469908%
C63971492.329217%
D63972093.267156%

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 7633 6398 4 4 0.05% 0.06%
B 7633 6398 2 2 0.03% 0.03%
C 7633 6398 0 0 0.00% 0.00%
D 7633 6398 81 81 1.06% 1.27%

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 24675 134.71 882 866 176.7
A 0 226 7799 39.23 882 866 176.7
A 12 194 6819 33.68 882 866 176.7
B 3 209 44960 267.42 873 853 164.9
B 0 229 32275 190.51 873 853 164.9
B 0 230 21849 127.3 873 853 164.9
C 14 238 129373 661.39 838 847 194.3
C 3 233 11360 54.1 838 847 194.3
C 13 61 6012 26.58 838 847 194.3
D 1 52 518315 2477.1 854 832 208.9
D 5 222 135535 644.8 854 832 208.9
D 13 172 70848 335.15 854 832 208.9

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