ASTROSAT CZTI

Data Quality Report

Orbit 11498

Creation date: 2024-06-27T16:13:50.058584
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/AS1A04_021T05_9000001686_11498cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11498cztM0_level2_quad_clean.evt
Size (bytes)920,839,68099,812,160
Size878.2 MB 95.2 MB
Events in quadrant A7,672,940609,841
Events in quadrant B9,458,309582,656
Events in quadrant C3,433,277697,852
Events in quadrant D6,807,337598,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281664
B0332863
C0156853
D0254803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A766094112.284595%
B7660202126.383812%
C7660390.509138%
D7660106713.929504%

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 8156 7665 578 578 7.09% 7.54%
B 8156 7665 1667 1667 20.44% 21.75%
C 8156 7665 1 1 0.01% 0.01%
D 8156 7665 1000 1000 12.26% 13.05%

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 8 5 4094016 23723.39 843 824 172.5
A 15 223 116998 673.32 843 824 172.5
A 15 239 55653 317.78 843 824 172.5
B 4 81 5209371 34516.23 791 771 150.9
B 4 239 770741 5102.42 791 771 150.9
B 11 51 198117 1307.77 791 771 150.9
C 13 61 6311 26.48 880 886 204.8
C 12 4 3761 14.03 880 886 204.8
C 3 202 2121 6.03 880 886 204.8
D 1 52 3107317 15600.8 817 792 199.1
D 2 120 245849 1230.66 817 792 199.1
D 8 195 173139 865.52 817 792 199.1

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