ASTROSAT CZTI

Data Quality Report

Orbit 58761

Creation date: 2026-08-07T22:10:39.854513
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_106T01_9000006596_58761cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58761cztM0_level2_quad_clean.evt
Size (bytes)534,576,96085,656,960
Size509.8 MB 81.7 MB
Events in quadrant A2,922,499606,736
Events in quadrant B3,653,560633,611
Events in quadrant C3,262,401574,770
Events in quadrant D9,478,642354,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128261
B0151031
C0140641
D0323881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6058941.551667%
B60592173.581449%
C60591402.310612%
D6058238939.435457%

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 7148 6059 15 15 0.21% 0.25%
B 7149 6060 81 81 1.13% 1.34%
C 7149 6060 59 59 0.83% 0.97%
D 7148 6059 2079 2079 29.09% 34.31%

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 14 114688 679.93 678 664 167.7
A 15 233 54826 322.97 678 664 167.7
A 11 3 23582 136.66 678 664 167.7
B 0 171 278347 1955.53 663 639 142.0
B 10 16 275720 1937.03 663 639 142.0
B 8 234 168707 1183.48 663 639 142.0
C 15 147 155375 857.05 658 652 180.5
C 6 223 113763 626.55 658 652 180.5
C 12 249 100533 553.27 658 652 180.5
D 11 129 5005580 32716.93 534 508 153.0
D 12 110 1471912 9618.21 534 508 153.0
D 2 120 248227 1619.28 534 508 153.0

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