ASTROSAT CZTI

Data Quality Report

Orbit 03146

Creation date: 2024-06-27T14:25:13.716662
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_118T01_9000000430_03146cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03146cztM0_level2_quad_clean.evt
Size (bytes)573,359,04074,174,400
Size546.8 MB 70.7 MB
Events in quadrant A3,719,644431,325
Events in quadrant B3,904,006430,048
Events in quadrant C5,254,020416,628
Events in quadrant D3,945,368413,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167223
B0170782
C0210872
D0175832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79692082.610114%
B79692493.124608%
C79694806.023340%
D79691121.405446%

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 8044 7971 4 4 0.05% 0.05%
B 8044 7971 6 6 0.07% 0.08%
C 8044 7971 303 303 3.77% 3.80%
D 8044 7971 41 41 0.51% 0.51%

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 14 249 29048 144.92 943 923 194.1
A 12 247 21220 104.58 943 923 194.1
A 0 128 15297 74.06 943 923 194.1
B 4 81 119787 641.64 955 929 185.2
B 2 249 29990 156.88 955 929 185.2
B 5 70 14064 70.91 955 929 185.2
C 14 223 1255904 5933.95 899 901 211.5
C 14 234 293191 1382.01 899 901 211.5
C 1 192 117837 552.9 899 901 211.5
D 2 136 154370 682.86 913 882 224.8
D 13 120 80482 354.14 913 882 224.8
D 12 233 73832 324.55 913 882 224.8

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