ASTROSAT CZTI

Data Quality Report

Orbit 37898

Creation date: 2024-06-27T21:45:52.315288
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_059T01_9000005354_37898cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37898cztM0_level2_quad_clean.evt
Size (bytes)477,014,40099,322,560
Size454.9 MB 94.7 MB
Events in quadrant A3,053,072684,193
Events in quadrant B3,247,082678,194
Events in quadrant C3,071,585678,017
Events in quadrant D4,717,273598,521

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122453
B0128002
C0123532
D0175822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5265210.398860%
B52651583.000950%
C5265711.348528%
D526563912.136752%

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 7387 5266 10 10 0.14% 0.19%
B 7387 5266 110 110 1.49% 2.09%
C 7387 5266 51 51 0.69% 0.97%
D 7387 5266 507 507 6.86% 9.63%

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 377576 2888.66 648 637 130.5
A 7 3 43003 324.67 648 637 130.5
A 12 16 36399 274.06 648 637 130.5
B 5 172 442007 3744.21 630 616 117.9
B 4 171 153946 1300.66 630 616 117.9
B 0 229 74343 625.41 630 616 117.9
C 0 10 275127 1933.31 616 621 142.0
C 15 214 225694 1585.16 616 621 142.0
C 14 67 91547 640.38 616 621 142.0
D 2 249 1234635 8661.24 585 572 142.5
D 1 52 375222 2629.47 585 572 142.5
D 10 199 204386 1430.46 585 572 142.5

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