ASTROSAT CZTI

Data Quality Report

Orbit 16126

Creation date: 2024-06-27T17:18:21.037413
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/AS1T02_094T01_9000002380_16126cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16126cztM0_level2_quad_clean.evt
Size (bytes)530,150,40084,291,840
Size505.6 MB 80.4 MB
Events in quadrant A3,468,329555,263
Events in quadrant B4,058,061547,465
Events in quadrant C3,343,770522,275
Events in quadrant D4,768,475497,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142942
B0161331
C0140291
D0182591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61561071.738142%
B61561342.176738%
C61561151.868096%
D61565378.723197%

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 7262 6157 27 27 0.37% 0.44%
B 7262 6157 13 13 0.18% 0.21%
C 7262 6157 0 0 0.00% 0.00%
D 7262 6157 433 433 5.96% 7.03%

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 15 174 330131 2116.44 765 749 155.6
A 0 253 135159 863.65 765 749 155.6
A 8 247 52932 335.3 765 749 155.6
B 5 65 612697 4185.41 763 745 146.2
B 7 220 145471 989.85 763 745 146.2
B 0 189 130333 886.31 763 745 146.2
C 3 9 324073 1880.52 732 738 171.9
C 14 238 112439 649.65 732 738 171.9
C 3 233 22987 129.4 732 738 171.9
D 1 52 1568172 8822.75 728 708 177.7
D 13 112 150938 845.6 728 708 177.7
D 7 38 100678 562.7 728 708 177.7

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