ASTROSAT CZTI

Data Quality Report

Orbit 05918

Creation date: 2024-06-27T15:00:49.025004
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/AS1A02_174T01_9000000766_05918cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05918cztM0_level2_quad_clean.evt
Size (bytes)624,913,92075,669,120
Size596.0 MB 72.2 MB
Events in quadrant A3,045,619475,522
Events in quadrant B3,229,469486,090
Events in quadrant C3,664,635467,500
Events in quadrant D8,556,842418,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134797
B0138652
C01526719
D02983515

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344450.709332%
B6346370.583044%
C63411612.539032%
D634381612.864575%

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 7591 6347 28 28 0.37% 0.44%
B 7591 6347 11 11 0.14% 0.17%
C 7591 6347 105 105 1.38% 1.65%
D 7591 6347 1201 1201 15.82% 18.92%

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 15 236 179067 1192.21 735 716 149.6
A 15 234 25872 168.16 735 716 149.6
A 0 226 7204 43.37 735 716 149.6
B 0 229 74008 512.87 751 735 142.9
B 15 204 59083 408.4 751 735 142.9
B 4 80 58442 403.91 751 735 142.9
C 9 247 851395 5082.24 717 722 167.4
C 9 68 8098 44.07 717 722 167.4
C 13 61 5784 30.24 717 722 167.4
D 1 20 5114194 29753.69 697 676 171.9
D 2 152 399019 2317.81 697 676 171.9
D 2 63 172034 997.07 697 676 171.9

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