ASTROSAT CZTI

Data Quality Report

Orbit 20498

Creation date: 2024-06-27T18:16:03.833607
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/AS1A05_115T01_9000003030_20498cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20498cztM0_level2_quad_clean.evt
Size (bytes)928,537,920136,615,680
Size885.5 MB 130.3 MB
Events in quadrant A5,577,357875,816
Events in quadrant B6,279,623884,957
Events in quadrant C5,736,485839,195
Events in quadrant D9,763,988755,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235782
B0256052
C0238992
D0364872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11303660.583916%
B113022171.920014%
C113021161.026367%
D1130210479.263847%

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 13723 11304 2 2 0.01% 0.02%
B 13722 11303 38 38 0.28% 0.34%
C 13722 11304 0 0 0.00% 0.00%
D 13722 11303 920 920 6.70% 8.14%

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 5 16 57702 198.17 1423 1397 284.1
A 12 96 33812 114.09 1423 1397 284.1
A 0 226 12326 38.47 1423 1397 284.1
B 7 220 194935 713.69 1429 1395 271.2
B 0 197 176740 646.59 1429 1395 271.2
B 0 189 153649 561.44 1429 1395 271.2
C 14 238 216579 683.74 1359 1368 314.8
C 3 233 168513 531.03 1359 1368 314.8
C 9 221 21850 65.07 1359 1368 314.8
D 2 16 1420764 4451.47 1318 1280 318.9
D 7 38 1069735 3350.65 1318 1280 318.9
D 1 52 880409 2756.93 1318 1280 318.9

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