ASTROSAT CZTI

Data Quality Report

Orbit 56578

Creation date: 2026-03-14T01:03:57.793015
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_083T06_9000006558_56578cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56578cztM0_level2_quad_clean.evt
Size (bytes)441,662,40089,020,800
Size421.2 MB 84.9 MB
Events in quadrant A3,333,797593,804
Events in quadrant B2,991,467639,069
Events in quadrant C3,429,848556,486
Events in quadrant D6,120,114480,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143521
B0133171
C0147611
D0223464

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093961.575579%
B6093951.559166%
C60941222.001969%
D609374612.243558%

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 7243 6094 49 49 0.68% 0.80%
B 7243 6094 51 51 0.70% 0.84%
C 7244 6095 139 139 1.92% 2.28%
D 7243 6094 729 729 10.06% 11.96%

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 4 95 220861 1364.3 653 637 161.4
A 0 8 164856 1017.35 653 637 161.4
A 4 249 97081 597.48 653 637 161.4
B 0 173 139849 1007.91 650 629 138.1
B 8 128 51748 370.08 650 629 138.1
B 4 171 48285 345.01 650 629 138.1
C 15 230 474987 2763.2 624 618 171.7
C 12 252 285002 1656.54 624 618 171.7
C 6 223 84499 488.61 624 618 171.7
D 8 129 1440519 8504.61 591 564 169.3
D 6 239 1391392 8214.46 591 564 169.3
D 14 52 243075 1432.31 591 564 169.3

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