ASTROSAT CZTI

Data Quality Report

Orbit 18950

Creation date: 2024-06-27T17:56:57.312108
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/AS1T03_090T01_9000002822_18950cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18950cztM0_level2_quad_clean.evt
Size (bytes)824,728,320105,972,480
Size786.5 MB 101.1 MB
Events in quadrant A11,580,408521,076
Events in quadrant B4,556,508750,736
Events in quadrant C3,240,640745,347
Events in quadrant D5,134,810711,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391328
B0178951
C0140501
D0198611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6871354951.651870%
B68713334.846456%
C68721261.833527%
D68725197.552386%

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 7516 6872 2613 2613 34.77% 38.02%
B 7516 6872 178 178 2.37% 2.59%
C 7517 6873 0 0 0.00% 0.00%
D 7517 6873 247 247 3.29% 3.59%

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 14 235 9222730 75297.77 608 595 122.5
A 3 0 8288 62.81 608 595 122.5
A 13 254 5890 43.23 608 595 122.5
B 3 112 1107691 7251.8 814 794 152.6
B 0 189 115857 753.83 814 794 152.6
B 7 220 83211 539.95 814 794 152.6
C 14 238 126107 681.71 796 801 183.8
C 13 61 5670 26.49 796 801 183.8
C 8 128 4860 22.08 796 801 183.8
D 7 238 1575210 8269.47 794 768 190.4
D 12 218 252771 1323.6 794 768 190.4
D 1 52 93091 484.91 794 768 190.4

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