ASTROSAT CZTI

Data Quality Report

Orbit 37605

Creation date: 2024-06-27T21:42:05.432535
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/AS1T05_053T01_9000005338_37605cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37605cztM0_level2_quad_clean.evt
Size (bytes)436,409,28072,478,080
Size416.2 MB 69.1 MB
Events in quadrant A2,868,962467,149
Events in quadrant B3,225,517466,802
Events in quadrant C2,766,991461,718
Events in quadrant D3,992,676425,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118783
B0131852
C0115302
D0154392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341210.393185%
B53411102.059539%
C5341500.936154%
D53412795.223741%

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 7162 5342 12 12 0.17% 0.22%
B 7161 5340 89 89 1.24% 1.67%
C 7161 5341 52 52 0.73% 0.97%
D 7161 5341 280 280 3.91% 5.24%

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 10 83 346570 2722.5 624 611 127.1
A 12 189 31465 242.8 624 611 127.1
A 9 143 25005 191.97 624 611 127.1
B 5 172 210063 1799.83 616 604 116.4
B 4 171 139193 1190.86 616 604 116.4
B 5 200 113867 973.24 616 604 116.4
C 15 214 232792 1673.81 595 598 138.7
C 0 10 165523 1188.89 595 598 138.7
C 14 254 28513 201.23 595 598 138.7
D 10 204 371004 2571.67 584 565 144.0
D 12 233 315478 2186.19 584 565 144.0
D 2 249 288466 1998.67 584 565 144.0

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