ASTROSAT CZTI

Data Quality Report

Orbit 57786

Creation date: 2026-06-03T08:28:43.954038
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_083T16_9000006580_57786cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57786cztM0_level2_quad_clean.evt
Size (bytes)1,715,235,840298,062,720
Size1.6 GB 284.3 MB
Events in quadrant A9,929,0162,077,617
Events in quadrant B11,206,2302,219,844
Events in quadrant C28,455,3941,465,408
Events in quadrant D12,272,5131,809,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443494
B0482734
C0993104
D0515534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21092760.360326%
B210922741.299071%
C21093498923.652397%
D210935542.626464%

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 25617 21096 9 9 0.04% 0.04%
B 25617 21096 71 71 0.28% 0.34%
C 25618 21096 4303 4303 16.80% 20.40%
D 25618 21097 516 516 2.01% 2.45%

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 3 128 593550 1079.48 2231 2179 547.8
A 3 14 591743 1076.18 2231 2179 547.8
A 3 245 45086 78.32 2231 2179 547.8
B 4 80 1456700 3158.15 2213 2129 460.6
B 10 247 255674 550.49 2213 2129 460.6
B 4 171 154576 330.99 2213 2129 460.6
C 9 38 16195606 29605.31 2010 1986 547.0
C 15 224 3817024 6974.68 2010 1986 547.0
C 12 2 243383 441.32 2010 1986 547.0
D 8 160 1444450 2376.02 2133 2035 607.1
D 2 153 1352753 2224.97 2133 2035 607.1
D 3 12 452845 742.6 2133 2035 607.1

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