ASTROSAT CZTI

Data Quality Report

Orbit 29761

Creation date: 2024-06-27T20:07:31.796898
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_291T01_9000004278_29761cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29761cztM0_level2_quad_clean.evt
Size (bytes)616,043,520102,291,840
Size587.5 MB 97.6 MB
Events in quadrant A3,406,042700,601
Events in quadrant B6,243,370681,125
Events in quadrant C3,463,140656,618
Events in quadrant D5,119,874621,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140152
B0226132
C0140372
D0195262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62731051.673840%
B62735368.544556%
C62731652.630320%
D62723415.436862%

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 7558 6273 0 0 0.00% 0.00%
B 7558 6273 274 274 3.63% 4.37%
C 7558 6273 1 1 0.01% 0.02%
D 7557 6272 278 278 3.68% 4.43%

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 12 16 12879 70.18 879 864 171.2
A 13 254 12652 68.85 879 864 171.2
A 3 137 7870 40.92 879 864 171.2
B 6 159 1889249 11950.85 857 840 158.0
B 0 229 899755 5688.81 857 840 158.0
B 5 255 71516 447.28 857 840 158.0
C 14 238 141458 745.58 825 832 188.6
C 7 247 62201 325.37 825 832 188.6
C 3 233 22086 112.69 825 832 188.6
D 7 80 814433 4233.24 817 794 192.2
D 8 195 704547 3661.52 817 794 192.2
D 7 223 198880 1030.61 817 794 192.2

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