ASTROSAT CZTI

Data Quality Report

Orbit 14526

Creation date: 2024-06-27T16:56:24.880854
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_066T01_9000002138_14526cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14526cztM0_level2_quad_clean.evt
Size (bytes)678,075,840116,075,520
Size646.7 MB 110.7 MB
Events in quadrant A4,663,622705,193
Events in quadrant B4,910,609714,089
Events in quadrant C4,894,344708,971
Events in quadrant D5,381,836686,685

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204631
B0211191
C0206431
D0228641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10107630.623330%
B10107820.811319%
C10107450.445236%
D101071381.365390%

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 10563 10109 0 0 0.00% 0.00%
B 10563 10109 3 3 0.03% 0.03%
C 10563 10109 0 0 0.00% 0.00%
D 10563 10109 89 89 0.84% 0.88%

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 8 15 88055 361.71 1176 1149 240.3
A 12 189 28193 112.56 1176 1149 240.3
A 0 226 10776 40.07 1176 1149 240.3
B 0 189 134308 595.59 1171 1142 223.6
B 0 219 58709 257.47 1171 1142 223.6
B 3 209 47817 208.75 1171 1142 223.6
C 3 233 395041 1479.68 1142 1146 266.2
C 8 128 18094 63.67 1142 1146 266.2
C 0 207 9688 32.09 1142 1146 266.2
D 12 110 388203 1402.49 1143 1114 276.0
D 10 199 253536 914.57 1143 1114 276.0
D 13 122 151222 543.87 1143 1114 276.0

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