ASTROSAT CZTI

Data Quality Report

Orbit 40542

Creation date: 2024-06-27T22:17:21.053794
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/AS1A12_011T26_9000005548_40542cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40542cztM0_level2_quad_clean.evt
Size (bytes)332,061,12086,592,960
Size316.7 MB 82.6 MB
Events in quadrant A2,924,292586,331
Events in quadrant B2,832,050601,317
Events in quadrant C3,000,352573,756
Events in quadrant D3,105,605475,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123913
B0120442
C0125772
D0133502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5505160.290645%
B5505120.217984%
C55051041.889192%
D550565211.843778%

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 7087 5506 9 9 0.13% 0.16%
B 7087 5506 0 0 0.00% 0.00%
C 7087 5506 77 77 1.09% 1.40%
D 7087 5505 220 220 3.10% 4.00%

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 10 83 474741 3932.22 585 572 120.6
A 12 189 86785 714.95 585 572 120.6
A 6 10 49807 408.3 585 572 120.6
B 3 112 503818 4396.29 584 568 114.5
B 12 111 14747 123.86 584 568 114.5
B 11 111 13369 111.83 584 568 114.5
C 14 254 486341 3625.77 570 575 134.0
C 15 214 240681 1792.16 570 575 134.0
C 10 20 35998 264.4 570 575 134.0
D 2 250 695261 5236.58 532 517 132.7
D 12 227 155874 1170.99 532 517 132.7
D 12 191 148991 1119.11 532 517 132.7

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