ASTROSAT CZTI

Data Quality Report

Orbit 25951

Creation date: 2024-06-27T19:23:11.035275
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/AS1A07_068T01_9000003760_25951cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25951cztM0_level2_quad_clean.evt
Size (bytes)520,274,880106,689,600
Size496.2 MB 101.7 MB
Events in quadrant A3,441,873720,550
Events in quadrant B3,388,897719,800
Events in quadrant C3,418,533685,139
Events in quadrant D5,073,384659,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144120
B0142110
C0144300
D0195060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397590.922307%
B6397620.969204%
C63971302.032203%
D63973425.346256%

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 7602 6398 0 0 0.00% 0.00%
B 7602 6398 0 0 0.00% 0.00%
C 7602 6398 0 0 0.00% 0.00%
D 7602 6398 230 230 3.03% 3.59%

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 0 13 29435 162.32 886 870 176.0
A 13 254 8844 45.31 886 870 176.0
A 3 137 7567 38.06 886 870 176.0
B 0 190 20324 119.93 863 843 162.4
B 12 111 19160 112.76 863 843 162.4
B 11 111 17545 102.82 863 843 162.4
C 14 238 138759 722.68 836 845 190.8
C 3 233 10563 50.92 836 845 190.8
C 2 16 7189 33.24 836 845 190.8
D 1 52 1531214 7778.99 837 819 196.7
D 7 80 256386 1299.05 837 819 196.7
D 12 1 96634 487.03 837 819 196.7

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