ASTROSAT CZTI

Data Quality Report

Orbit 16241

Creation date: 2024-06-27T17:19:49.278529
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/AS1T02_112T01_9000002390_16241cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16241cztM0_level2_quad_clean.evt
Size (bytes)455,967,360106,868,160
Size434.8 MB 101.9 MB
Events in quadrant A3,395,349711,484
Events in quadrant B3,516,388716,218
Events in quadrant C3,274,158702,557
Events in quadrant D3,224,678696,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135182
B0141091
C0135351
D0131281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58631943.308886%
B58631853.155381%
C58631612.746034%
D58631071.825004%

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 7094 5865 63 63 0.89% 1.07%
B 7094 5865 20 20 0.28% 0.34%
C 7094 5865 0 0 0.00% 0.00%
D 7094 5865 12 12 0.17% 0.20%

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 15 174 307056 1905.77 791 777 160.7
A 8 247 38009 231.67 791 777 160.7
A 3 1 9005 51.2 791 777 160.7
B 7 220 134027 908.52 781 766 146.7
B 10 16 74598 503.36 781 766 146.7
B 0 198 57607 387.52 781 766 146.7
C 3 233 216619 1250.83 750 755 172.6
C 14 238 119890 690.33 750 755 172.6
C 7 247 9574 51.1 750 755 172.6
D 1 52 203831 1098.4 772 752 184.9
D 15 0 40647 215.78 772 752 184.9
D 10 70 37471 198.6 772 752 184.9

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