ASTROSAT CZTI

Data Quality Report

Orbit 02530

Creation date: 2024-06-27T14:19:10.916764
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/AS1T01_034T01_9000000378_02530cztM0_level2.evt modeM0/AS1T01_034T01_9000000378_02530cztM0_level2_quad_clean.evt
Size (bytes)920,957,760170,239,680
Size878.3 MB 162.4 MB
Events in quadrant A4,648,6741,117,200
Events in quadrant B4,792,5941,142,626
Events in quadrant C4,844,9421,168,749
Events in quadrant D12,846,558951,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226413
B0227462
C0229982
D0462162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11205370.330210%
B11205430.383757%
C11205410.365908%
D11205274824.524766%

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 13220 11207 1 1 0.01% 0.01%
B 13220 11207 2 2 0.02% 0.02%
C 13220 11207 1 1 0.01% 0.01%
D 13220 11207 2372 2372 17.94% 21.17%

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 12 194 13293 49.65 1203 1177 244.0
A 0 226 12754 47.44 1203 1177 244.0
A 14 235 10975 40.15 1203 1177 244.0
B 10 244 24887 102.3 1228 1195 231.6
B 12 111 17671 71.14 1228 1195 231.6
B 11 111 15053 59.84 1228 1195 231.6
C 14 223 106224 382.92 1191 1198 274.3
C 7 220 29267 102.34 1191 1198 274.3
C 0 64 25015 86.84 1191 1198 274.3
D 11 130 7350079 30937.43 1016 993 237.5
D 2 136 647115 2719.98 1016 993 237.5
D 11 131 567217 2383.63 1016 993 237.5

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
Veto Counter