ASTROSAT CZTI

Data Quality Report

Orbit 15221

Creation date: 2024-06-27T17:05:29.927037
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_105T01_9000002248_15221cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15221cztM0_level2_quad_clean.evt
Size (bytes)1,433,352,960147,113,280
Size1.3 GB 140.3 MB
Events in quadrant A17,364,548892,869
Events in quadrant B12,230,189872,046
Events in quadrant C7,850,042973,240
Events in quadrant D5,231,979959,779

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0591993
B0436842
C0305432
D0229512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10901347631.886983%
B10901252423.153839%
C109015334.889460%
D109011321.210898%

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 12437 10902 2523 2523 20.29% 23.14%
B 12436 10901 1906 1906 15.33% 17.48%
C 12437 10902 366 366 2.94% 3.36%
D 12437 10903 49 49 0.39% 0.45%

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 0 253 12352734 49726.86 1233 1205 248.4
A 12 189 162365 648.82 1233 1205 248.4
A 15 239 72666 287.7 1233 1205 248.4
B 3 112 6984292 31357.87 1165 1136 222.7
B 3 64 342270 1531.86 1165 1136 222.7
B 0 245 98967 439.31 1165 1136 222.7
C 3 233 1761355 6125.37 1243 1248 287.3
C 4 254 1198094 4165.16 1243 1248 287.3
C 7 247 20118 65.67 1243 1248 287.3
D 7 38 210434 678.55 1265 1228 308.3
D 2 16 78413 250.35 1265 1228 308.3
D 2 234 40357 126.91 1265 1228 308.3

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