ASTROSAT CZTI

Data Quality Report

Orbit 59009

Creation date: 2026-08-24T14:40:11.608032
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_004T02_9000006600_59009cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59009cztM0_level2_quad_clean.evt
Size (bytes)657,682,56096,393,600
Size627.2 MB 91.9 MB
Events in quadrant A4,377,688656,942
Events in quadrant B3,973,735707,036
Events in quadrant C5,022,597633,769
Events in quadrant D10,438,622441,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176182
B0165022
C0196892
D0357754

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68743294.786151%
B68743354.873436%
C68742483.607797%
D6873215431.340026%

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 7694 6874 161 161 2.09% 2.34%
B 7694 6874 92 92 1.20% 1.34%
C 7694 6874 135 135 1.75% 1.96%
D 7693 6873 2145 2145 27.88% 31.21%

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 10 251 1018894 5322.26 777 756 191.3
A 3 14 112027 581.66 777 756 191.3
A 14 238 104867 544.23 777 756 191.3
B 5 185 527195 3201.66 768 742 164.4
B 3 238 115354 697.02 768 742 164.4
B 4 236 66130 397.66 768 742 164.4
C 15 219 1529195 7469.76 749 742 204.6
C 12 252 200195 974.75 749 742 204.6
C 6 223 173175 842.7 749 742 204.6
D 12 110 6980561 35758.16 690 658 195.2
D 11 129 396567 2028.25 690 658 195.2
D 12 248 105321 536.19 690 658 195.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct