ASTROSAT CZTI

Data Quality Report

Orbit 11954

Creation date: 2024-06-27T16:20:29.608939
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_124T01_9000001766_11954cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11954cztM0_level2_quad_clean.evt
Size (bytes)534,064,320127,615,680
Size509.3 MB 121.7 MB
Events in quadrant A3,386,769871,578
Events in quadrant B4,503,066865,208
Events in quadrant C3,013,587879,224
Events in quadrant D4,841,400807,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144133
B0178592
C0133322
D0189482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6332921.452937%
B63324637.312066%
C6332320.505370%
D63325128.085913%

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 7588 6333 6 6 0.08% 0.09%
B 7588 6333 296 296 3.90% 4.67%
C 7588 6333 0 0 0.00% 0.00%
D 7587 6332 447 447 5.89% 7.06%

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 1 162 119935 763.91 777 761 156.0
A 1 178 63104 399.62 777 761 156.0
A 1 161 55554 351.22 777 761 156.0
B 4 239 1010359 7191.91 764 745 140.4
B 15 204 374197 2660.26 764 745 140.4
B 0 218 49714 348.83 764 745 140.4
C 13 61 5870 28.89 771 776 176.3
C 14 234 4599 21.68 771 776 176.3
C 0 207 2419 9.32 771 776 176.3
D 13 122 816227 4617.24 745 724 176.6
D 1 52 697947 3947.56 745 724 176.6
D 8 195 120323 677.15 745 724 176.6

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