ASTROSAT CZTI

Data Quality Report

Orbit 54260

Creation date: 2025-10-09T18:47:33.848996
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_54260cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54260cztM0_level2_quad_clean.evt
Size (bytes)695,275,200105,203,520
Size663.1 MB 100.3 MB
Events in quadrant A4,841,035731,349
Events in quadrant B5,304,540792,209
Events in quadrant C9,388,869499,921
Events in quadrant D5,592,270614,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197580
B0211590
C0334627
D0222160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78692833.596391%
B78702393.036849%
C7868225728.685816%
D78695687.218198%

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 7869 7869 213 213 2.71% 2.71%
B 7870 7870 133 133 1.69% 1.69%
C 7869 7868 2191 2191 27.84% 27.85%
D 7869 7869 480 480 6.10% 6.10%

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 29 781255 3857.73 821 802 202.3
A 3 110 129823 637.74 821 802 202.3
A 12 17 129174 634.54 821 802 202.3
B 7 0 856716 4972.02 814 786 172.1
B 0 213 383158 2221.17 814 786 172.1
B 5 236 304471 1764.08 814 786 172.1
C 1 241 5109036 27529.64 673 667 185.6
C 1 29 796671 4289.77 673 667 185.6
C 14 254 452778 2436.48 673 667 185.6
D 8 176 1033394 4661.81 784 750 221.5
D 13 170 464390 2093.07 784 750 221.5
D 15 159 279706 1259.33 784 750 221.5

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