ASTROSAT CZTI

Data Quality Report

Orbit 20525

Creation date: 2024-06-27T18:16:24.523266
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_115T03_9000003032_20525cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20525cztM0_level2_quad_clean.evt
Size (bytes)477,933,12092,499,840
Size455.8 MB 88.2 MB
Events in quadrant A3,075,933617,890
Events in quadrant B3,437,243631,216
Events in quadrant C3,108,584591,971
Events in quadrant D4,437,690533,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128642
B0139773
C0129272
D0171892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110180.294599%
B6109661.080373%
C6109460.752987%
D61094377.153380%

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 7529 6109 1 1 0.01% 0.02%
B 7528 6108 16 16 0.21% 0.26%
C 7529 6109 0 0 0.00% 0.00%
D 7528 6109 418 418 5.55% 6.84%

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 11 29 7792 43.81 794 779 160.1
A 0 226 6998 38.85 794 779 160.1
A 14 239 6543 36.01 794 779 160.1
B 0 189 103686 700.63 798 782 146.9
B 7 220 73372 494.24 798 782 146.9
B 0 190 39766 265.43 798 782 146.9
C 14 238 120205 669.04 763 769 178.5
C 8 208 6189 30.36 763 769 178.5
C 0 207 5899 28.74 763 769 178.5
D 1 52 938769 5251.84 735 714 178.6
D 5 222 415910 2324.54 735 714 178.6
D 2 184 112273 624.58 735 714 178.6

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