ASTROSAT CZTI

Data Quality Report

Orbit 54194

Creation date: 2025-10-04T15:10:05.287747
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/AS1C09_004T08_9000006514_54194cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54194cztM0_level2_quad_clean.evt
Size (bytes)576,961,92084,355,200
Size550.2 MB 80.4 MB
Events in quadrant A3,050,834616,858
Events in quadrant B3,842,071649,636
Events in quadrant C2,832,030581,752
Events in quadrant D11,134,665259,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137581
B0155471
C0133441
D0374201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391580.907526%
B63912273.551870%
C6392170.265957%
D6392363656.883605%

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 7381 6391 19 19 0.26% 0.30%
B 7381 6391 130 130 1.76% 2.03%
C 7382 6393 7 7 0.09% 0.11%
D 7381 6392 3318 3318 44.95% 51.91%

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 15 174 128416 763.96 678 662 167.2
A 8 246 66631 394.49 678 662 167.2
A 7 29 51708 305.25 678 662 167.2
B 0 213 383713 2705.25 661 638 141.6
B 15 20 278603 1962.97 661 638 141.6
B 5 236 256314 1805.57 661 638 141.6
C 15 215 43777 239.69 649 642 180.0
C 0 193 41023 224.39 649 642 180.0
C 12 252 39984 218.62 649 642 180.0
D 8 176 9256394 81161.68 402 386 114.0
D 3 12 189978 1662.45 402 386 114.0
D 3 144 62808 547.35 402 386 114.0

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