ASTROSAT CZTI

Data Quality Report

Orbit 24650

Creation date: 2024-06-27T19:08:21.765568
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_191T01_9000003618_24650cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24650cztM0_level2_quad_clean.evt
Size (bytes)467,138,880131,296,320
Size445.5 MB 125.2 MB
Events in quadrant A3,023,061929,948
Events in quadrant B3,108,702923,198
Events in quadrant C4,483,581849,876
Events in quadrant D3,139,989869,964

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125672
B0128391
C0172741
D0130441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5783500.864603%
B5783370.639806%
C57831732.991527%
D5783440.760851%

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 7148 5784 0 0 0.00% 0.00%
B 7148 5784 0 0 0.00% 0.00%
C 7148 5783 67 67 0.94% 1.16%
D 7148 5784 2 2 0.03% 0.03%

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 13 254 9651 57.59 783 771 154.2
A 0 226 6870 39.56 783 771 154.2
A 3 137 6208 35.26 783 771 154.2
B 5 172 75295 528.18 760 743 141.1
B 0 190 19743 134.61 760 743 141.1
B 0 189 18487 125.71 760 743 141.1
C 7 247 1515058 9272.24 719 725 163.3
C 14 238 120214 731.63 719 725 163.3
C 3 233 16599 97.2 719 725 163.3
D 8 195 190772 1064.67 752 732 178.5
D 1 52 53935 298.06 752 732 178.5
D 12 235 27974 152.62 752 732 178.5

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