ASTROSAT CZTI

Data Quality Report

Orbit 52661

Creation date: 2025-06-24T11:18:13.094171
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/AS1C09_011T07_9000006480_52661cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52661cztM0_level2_quad_clean.evt
Size (bytes)1,065,942,72072,207,360
Size1016.6 MB 68.9 MB
Events in quadrant A4,855,146636,809
Events in quadrant B7,217,430613,642
Events in quadrant C13,919,752262,644
Events in quadrant D12,941,669199,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194640
B0261750
C0460450
D0431470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6794691.015602%
B679482312.113630%
C6794425462.614071%
D6793443265.243633%

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 6794 6794 49 49 0.72% 0.72%
B 6794 6794 513 513 7.55% 7.55%
C 6793 6793 4156 4156 61.18% 61.18%
D 6793 6793 3963 3963 58.34% 58.34%

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 1747485 9940.63 694 674 175.7
A 3 62 110115 622.8 694 674 175.7
A 5 240 53481 300.51 694 674 175.7
B 10 128 3091352 21968.87 664 641 140.7
B 5 185 514496 3652.5 664 641 140.7
B 10 254 247657 1755.8 664 641 140.7
C 15 233 7208031 53870.68 489 485 133.8
C 15 224 2228820 16655.03 489 485 133.8
C 15 248 952592 7116.24 489 485 133.8
D 12 3 8856807 88605.55 331 315 100.0
D 1 7 1361402 13617.11 331 315 100.0
D 8 176 664188 6641.78 331 315 100.0

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