ASTROSAT CZTI

Data Quality Report

Orbit 34715

Creation date: 2022-03-02T16:58:16.564271
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/AS1C07_001T01_9000004982_34715cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34715cztM0_level2_quad_clean.evt
Size (bytes)75,078,72017,688,960
Size71.6 MB 16.9 MB
Events in quadrant A513,997116,724
Events in quadrant B456,969120,637
Events in quadrant C590,225115,440
Events in quadrant D646,709110,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020592
B019341
C022801
D025291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92450.541126%
B92440.432900%
C924515.519481%
D924232.489177%

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 2658 925 3 3 0.11% 0.32%
B 2658 925 1 1 0.04% 0.11%
C 2658 925 40 40 1.50% 4.32%
D 2658 925 13 13 0.49% 1.41%

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 43716 1859.19 108 106 23.5
A 9 143 21274 902.44 108 106 23.5
A 10 83 19447 824.55 108 106 23.5
B 4 81 9403 414.22 107 104 22.4
B 4 232 6679 292.88 107 104 22.4
B 0 189 5695 249.05 107 104 22.4
C 0 10 146350 5795.49 101 101 25.2
C 15 214 42071 1663.17 101 101 25.2
C 14 67 3595 138.46 101 101 25.2
D 8 195 95499 3497.18 104 100 27.3
D 12 6 38051 1391.22 104 100 27.3
D 13 249 20274 739.55 104 100 27.3

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