ASTROSAT CZTI

Data Quality Report

Orbit 14424

Creation date: 2024-06-27T16:54:59.251632
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/AS1G08_025T01_9000002130_14424cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14424cztM0_level2_quad_clean.evt
Size (bytes)905,083,200110,540,160
Size863.2 MB 105.4 MB
Events in quadrant A4,746,213706,662
Events in quadrant B6,715,176686,424
Events in quadrant C8,324,308661,606
Events in quadrant D7,014,298664,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196893
B0257622
C0311582
D0270212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90431161.282760%
B9043106811.810240%
C90438189.045671%
D90436427.099414%

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 10294 9044 0 0 0.00% 0.00%
B 10294 9044 698 698 6.78% 7.72%
C 10294 9044 534 534 5.19% 5.90%
D 10294 9044 496 496 4.82% 5.48%

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 12 189 322082 1417.6 1108 1086 226.4
A 8 15 141463 619.94 1108 1086 226.4
A 11 29 12206 49.11 1108 1086 226.4
B 0 85 2370300 11773.18 1047 1019 201.2
B 0 229 71219 348.83 1047 1019 201.2
B 10 245 46975 228.36 1047 1019 201.2
C 3 233 4277338 17902.81 1029 1033 238.9
C 0 207 11916 45.56 1029 1033 238.9
C 8 128 11327 43.1 1029 1033 238.9
D 13 122 1895617 7475.26 1041 1016 253.4
D 15 0 450866 1774.91 1041 1016 253.4
D 12 110 297850 1171.18 1041 1016 253.4

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