ASTROSAT CZTI

Data Quality Report

Orbit 42455

Creation date: 2024-06-27T22:40:23.208112
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/AS1C07_001T10_9000005806_42455cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42455cztM0_level2_quad_clean.evt
Size (bytes)537,405,12085,023,360
Size512.5 MB 81.1 MB
Events in quadrant A3,055,447631,398
Events in quadrant B6,258,872425,157
Events in quadrant C2,868,027614,682
Events in quadrant D7,261,140498,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125792
B0228942
C0123172
D0255972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5782120.207541%
B5783188532.595539%
C5783410.708975%
D5783118820.542971%

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 9008 5784 2 2 0.02% 0.03%
B 9009 5785 1661 1661 18.44% 28.71%
C 9009 5785 34 34 0.38% 0.59%
D 9009 5785 1074 1074 11.92% 18.57%

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 606351 4719.06 622 608 128.4
A 12 189 15919 119.28 622 608 128.4
A 13 248 15399 115.23 622 608 128.4
B 0 186 4136384 43803.45 487 473 94.4
B 5 255 94952 1000.63 487 473 94.4
B 5 172 64120 674.09 487 473 94.4
C 14 254 268948 1902.35 602 605 141.1
C 15 214 240640 1701.66 602 605 141.1
C 15 111 9003 59.54 602 605 141.1
D 1 52 3825376 27514.78 565 548 139.0
D 12 6 322499 2316.03 565 548 139.0
D 2 16 319508 2294.51 565 548 139.0

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