ASTROSAT CZTI

Data Quality Report

Orbit 18162

Creation date: 2024-06-27T17:46:01.652386
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_014T01_9000002704_18162cztM0_level2.evt modeM0/AS1T03_014T01_9000002704_18162cztM0_level2_quad_clean.evt
Size (bytes)520,804,80095,973,120
Size496.7 MB 91.5 MB
Events in quadrant A4,280,738610,334
Events in quadrant B3,313,129629,360
Events in quadrant C3,362,310606,472
Events in quadrant D4,359,753590,983

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171992
B0140982
C0142772
D0175492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67353104.602821%
B6735500.742390%
C6735831.232368%
D6735931.380846%

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 7820 6736 156 156 1.99% 2.32%
B 7820 6736 1 1 0.01% 0.01%
C 7820 6736 7 7 0.09% 0.10%
D 7820 6736 52 52 0.66% 0.77%

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 15 174 1124283 6735.32 820 803 166.8
A 0 226 7107 37.79 820 803 166.8
A 3 137 6029 31.33 820 803 166.8
B 7 220 33094 204.28 829 808 158.0
B 12 111 18662 112.97 829 808 158.0
B 0 189 18511 112.01 829 808 158.0
C 4 254 128466 679.38 797 802 187.9
C 14 238 125712 664.72 797 802 187.9
C 13 61 5620 25.64 797 802 187.9
D 7 238 946516 4809.86 803 781 196.6
D 11 176 185883 941.4 803 781 196.6
D 13 104 94921 478.78 803 781 196.6

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