ASTROSAT CZTI

Data Quality Report

Orbit 53702

Creation date: 2025-09-01T12:06:46.591272
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/AS1A14_022T05_9000006504_53702cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53702cztM0_level2_quad_clean.evt
Size (bytes)313,954,56029,609,280
Size299.4 MB 28.2 MB
Events in quadrant A4,906,44062,109
Events in quadrant B1,360,986277,400
Events in quadrant C3,411,865169,549
Events in quadrant D1,751,762209,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09840
B010240
C09933
D09733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086
B086
C095
D086

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03345717381
B0101104300
C02433912555
D0127765883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2201163974.466152%
B2630160.608365%
C237564927.326316%
D25071325.265257%

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 7238 2483 1637 1637 22.62% 65.93%
B 7231 2823 17 17 0.24% 0.60%
C 7224 2623 654 654 9.05% 24.93%
D 7284 2727 139 139 1.91% 5.10%

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 63 4017956 94774.74 165 161 42.4
A 14 254 85434 2011.48 165 161 42.4
A 3 78 54550 1282.97 165 161 42.4
B 5 185 78691 1265.76 284 275 62.0
B 10 254 72555 1166.72 284 275 62.0
B 4 216 29015 463.91 284 275 62.0
C 15 224 1383536 22297.49 218 216 62.0
C 13 3 416190 6705.01 218 216 62.0
C 1 241 205905 3315.46 218 216 62.0
D 14 50 210696 2777.25 258 246 75.8
D 1 241 170956 2252.81 258 246 75.8
D 10 172 112026 1475.13 258 246 75.8

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