ASTROSAT CZTI

Data Quality Report

Orbit 20231127_A13_080T06_9000005954_level2

Creation date: 2023-11-30T13:39:09.500982
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/AS1A13_080T06_9000005954cztM0_level2.fits modeM0/AS1A13_080T06_9000005954cztM0_level2_quad_clean.evt
Size (bytes)360,685,440524,404,800
Size344.0 MB 500.1 MB
Events in quadrant A2,061,3063,251,963
Events in quadrant B2,036,4223,447,122
Events in quadrant C2,119,5883,314,382
Events in quadrant D1,793,8202,962,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08560
C08560
D08560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01568920
B01236300
C0999600
D01258750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42337497311.746227%
B4233833257.853465%
C4233820304.794747%
D4233726086.160096%

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 51996 42268 0 0 0.00% 0.00%
B 51996 42290 0 0 0.00% 0.00%
C 51996 42279 0 0 0.00% 0.00%
D 51995 42318 0 0 0.00% 0.00%

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 7 110 1767 9.14 539 506 138.0
A 0 29 1669 8.43 539 506 138.0
A 7 109 1641 8.23 539 506 138.0
B 2 9 1877 12.62 542 517 107.8
B 2 8 1469 8.83 542 517 107.8
B 3 17 1462 8.77 542 517 107.8
C 1 81 1602 7.44 562 524 145.0
C 1 80 1576 7.26 562 524 145.0
C 3 158 1422 6.19 562 524 145.0
D 6 79 1331 5.93 518 471 145.0
D 6 38 1330 5.92 518 471 145.0
D 10 113 1315 5.82 518 471 145.0

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