ASTROSAT CZTI

Data Quality Report

Orbit 20406

Creation date: 2024-06-27T18:15:00.628491
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/AS1A05_140T01_9000003016_20406cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20406cztM0_level2_quad_clean.evt
Size (bytes)429,629,76085,541,760
Size409.7 MB 81.6 MB
Events in quadrant A3,066,737551,499
Events in quadrant B3,233,655557,114
Events in quadrant C3,011,329527,666
Events in quadrant D3,277,985521,068

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130601
B0135371
C0128301
D0139671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621190.144904%
B6211280.450813%
C6211400.644019%
D6211430.692320%

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 7381 6212 0 0 0.00% 0.00%
B 7381 6211 5 5 0.07% 0.08%
C 7381 6212 0 0 0.00% 0.00%
D 7381 6212 30 30 0.41% 0.48%

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 12 16 43780 273.36 782 767 157.3
A 12 194 12213 72.74 782 767 157.3
A 0 226 6929 39.16 782 767 157.3
B 10 245 70325 474.9 778 759 146.5
B 0 189 41674 279.31 778 759 146.5
B 0 197 40105 268.6 778 759 146.5
C 14 238 117171 683.73 737 743 170.3
C 3 233 10827 59.22 737 743 170.3
C 7 220 6220 32.16 737 743 170.3
D 1 52 362580 2012.47 745 726 179.8
D 2 165 59429 326.48 745 726 179.8
D 13 153 32393 176.12 745 726 179.8

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