ASTROSAT CZTI

Data Quality Report

Orbit 55716

Creation date: 2026-01-15T10:10:48.729795
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/AS1A14_099T04_9000006540_55716cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55716cztM0_level2_quad_clean.evt
Size (bytes)1,532,926,080247,265,280
Size1.4 GB 235.8 MB
Events in quadrant A22,402,8261,301,129
Events in quadrant B7,978,3191,833,114
Events in quadrant C11,078,3181,598,642
Events in quadrant D13,830,5871,457,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0795435
B0386383
C0469293
D0543153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18797462424.599670%
B187971961.042720%
C187987924.213214%
D1879811896.325141%

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 19947 18802 3781 3781 18.96% 20.11%
B 19947 18802 28 28 0.14% 0.15%
C 19948 18803 649 649 3.25% 3.45%
D 19948 18803 1101 1101 5.52% 5.86%

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 32 12769644 29762.32 1748 1706 429.0
A 4 249 1484165 3455.64 1748 1706 429.0
A 0 8 743757 1729.74 1748 1706 429.0
B 5 248 77811 181.57 1947 1872 418.2
B 12 111 52142 120.19 1947 1872 418.2
B 11 111 48554 111.62 1947 1872 418.2
C 12 249 1771638 3405.1 1905 1887 519.7
C 12 252 500650 959.65 1905 1887 519.7
C 13 3 346179 662.44 1905 1887 519.7
D 11 129 5138067 9718.55 1883 1800 528.5
D 10 181 762971 1440.24 1883 1800 528.5
D 2 31 187798 351.93 1883 1800 528.5

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