ASTROSAT CZTI

Data Quality Report

Orbit 50999

Creation date: 2025-03-03T11:47:33.686574
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_001T02_9000006452_50999cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50999cztM0_level2_quad_clean.evt
Size (bytes)533,393,28089,628,480
Size508.7 MB 85.5 MB
Events in quadrant A4,961,687577,878
Events in quadrant B3,964,341628,900
Events in quadrant C5,234,178545,164
Events in quadrant D5,090,711518,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191531
B0162911
C0199381
D0197481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63633415.359107%
B63643225.059711%
C63645057.935261%
D63644016.301069%

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 7398 6364 224 224 3.03% 3.52%
B 7399 6365 179 179 2.42% 2.81%
C 7399 6365 497 497 6.72% 7.81%
D 7399 6365 386 386 5.22% 6.06%

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 12 80 1492072 9143.76 650 633 163.1
A 4 4 111253 678.19 650 633 163.1
A 5 240 98890 602.4 650 633 163.1
B 12 32 727039 5342.34 645 624 136.0
B 1 223 123720 905.3 645 624 136.0
B 4 206 113035 826.71 645 624 136.0
C 1 44 625165 3637.35 618 614 171.7
C 12 247 546064 3176.67 618 614 171.7
C 13 3 544684 3168.63 618 614 171.7
D 8 176 694531 4005.61 613 590 173.2
D 2 153 461417 2660.02 613 590 173.2
D 2 216 438695 2528.86 613 590 173.2

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