ASTROSAT CZTI

Data Quality Report

Orbit 21423

Creation date: 2024-06-27T18:27:39.294068
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_140T01_9000003160_21423cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21423cztM0_level2_quad_clean.evt
Size (bytes)463,633,920111,240,000
Size442.2 MB 106.1 MB
Events in quadrant A3,294,686755,993
Events in quadrant B3,337,810755,742
Events in quadrant C3,259,736723,427
Events in quadrant D3,738,191711,311

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135691
B0137341
C0135341
D0149511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6048661.091270%
B6049821.355596%
C6049881.454786%
D6049691.140684%

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 7368 6048 0 0 0.00% 0.00%
B 7369 6049 11 11 0.15% 0.18%
C 7369 6050 1 1 0.01% 0.02%
D 7369 6049 34 34 0.46% 0.56%

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 5 168 91242 544.5 830 816 166.1
A 13 254 10046 55.58 830 816 166.1
A 0 226 7431 39.83 830 816 166.1
B 0 190 31529 199.87 814 796 153.8
B 0 228 31486 199.59 814 796 153.8
B 3 64 30642 194.1 814 796 153.8
C 14 238 124397 691.42 775 783 178.8
C 3 233 99033 549.55 775 783 178.8
C 10 91 9257 47.4 775 783 178.8
D 1 52 214805 1115.61 799 780 191.8
D 7 38 161396 837.22 799 780 191.8
D 12 235 101815 526.65 799 780 191.8

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