ASTROSAT CZTI

Data Quality Report

Orbit 33146

Creation date: 2024-06-27T20:45:25.521222
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/AS1A11_096T01_9000004766_33146cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33146cztM0_level2_quad_clean.evt
Size (bytes)592,346,88064,503,360
Size564.9 MB 61.5 MB
Events in quadrant A2,952,254404,421
Events in quadrant B4,173,330403,999
Events in quadrant C3,715,123387,444
Events in quadrant D6,714,021359,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120563
B0159452
C0144652
D0240822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5690130.228471%
B56903546.221441%
C56901602.811951%
D569098717.346221%

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 9337 5692 1 1 0.01% 0.02%
B 9337 5692 193 193 2.07% 3.39%
C 9337 5692 137 137 1.47% 2.41%
D 9337 5692 767 767 8.21% 13.48%

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 47 44711 302.94 741 730 145.2
A 0 31 21331 141.9 741 730 145.2
A 13 254 10427 66.79 741 730 145.2
B 5 172 779001 5790.07 719 702 134.4
B 0 219 448911 3334.4 719 702 134.4
B 15 85 27288 197.78 719 702 134.4
C 7 221 536743 3327.32 705 714 161.1
C 0 10 222839 1378.81 705 714 161.1
C 1 241 98314 605.84 705 714 161.1
D 8 195 1002628 5937.43 671 658 168.8
D 2 250 915849 5423.19 671 658 168.8
D 7 38 572881 3390.85 671 658 168.8

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