ASTROSAT CZTI

Data Quality Report

Orbit 10496

Creation date: 2024-06-27T16:00:10.340270
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/AS1G07_057T01_9000001520_10496cztM0_level2.evt modeM0/AS1G07_057T01_9000001520_10496cztM0_level2_quad_clean.evt
Size (bytes)444,807,36059,466,240
Size424.2 MB 56.7 MB
Events in quadrant A2,607,788359,876
Events in quadrant B3,504,708362,146
Events in quadrant C2,552,261363,947
Events in quadrant D4,435,115331,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01175
B01164
C01153
D01153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011617417
B014353438
C011737417
D017301501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5468761.389905%
B54663356.128796%
C5465390.713632%
D54584347.951631%

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 6365 5510 0 0 0.00% 0.00%
B 6360 5516 192 192 3.02% 3.48%
C 6356 5515 10 10 0.16% 0.18%
D 6365 5512 384 384 6.03% 6.97%

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 3 80 52236 386.37 656 643 133.5
A 15 239 10380 72.92 656 643 133.5
A 8 5 8239 56.89 656 643 133.5
B 4 239 839885 6709.32 646 629 125.1
B 0 214 56492 446.59 646 629 125.1
B 11 51 43077 339.34 646 629 125.1
C 14 234 81177 539.68 633 636 149.2
C 13 61 4666 27.0 633 636 149.2
C 14 67 1678 6.98 633 636 149.2
D 12 233 1259254 7728.86 608 594 162.9
D 2 16 243142 1489.38 608 594 162.9
D 1 20 232970 1426.92 608 594 162.9

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