ASTROSAT CZTI

Data Quality Report

Orbit 58194

Creation date: 2026-06-30T20:57:44.720607
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_042T02_9000006586_58194cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58194cztM0_level2_quad_clean.evt
Size (bytes)468,325,440100,782,720
Size446.6 MB 96.1 MB
Events in quadrant A3,146,987680,788
Events in quadrant B5,780,953683,800
Events in quadrant C3,126,434646,975
Events in quadrant D4,759,933572,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139812
B0217082
C0142122
D0186362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67061291.923650%
B67066559.767373%
C6706931.386818%
D67055017.472036%

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 7756 6707 9 9 0.12% 0.13%
B 7756 6707 382 382 4.93% 5.70%
C 7756 6707 11 11 0.14% 0.16%
D 7755 6706 359 359 4.63% 5.35%

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 3 245 60289 305.72 786 765 194.7
A 4 3 18334 90.24 786 765 194.7
A 3 137 9318 43.93 786 765 194.7
B 10 128 2016419 12587.83 747 718 160.1
B 2 249 443525 2765.28 747 718 160.1
B 0 79 111168 689.75 747 718 160.1
C 6 223 80183 383.15 755 746 207.3
C 13 16 38322 181.24 755 746 207.3
C 12 252 24510 114.62 755 746 207.3
D 8 160 629556 3013.14 739 706 208.7
D 6 239 399344 1910.08 739 706 208.7
D 7 222 350342 1675.29 739 706 208.7

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