ASTROSAT CZTI

Data Quality Report

Orbit 54950

Creation date: 2025-11-24T13:06:15.541454
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_014T01_9000006528_54950cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54950cztM0_level2_quad_clean.evt
Size (bytes)699,235,20077,207,040
Size666.8 MB 73.6 MB
Events in quadrant A3,780,266600,802
Events in quadrant B2,777,644677,720
Events in quadrant C3,686,413585,171
Events in quadrant D15,128,09817,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160321
B0133751
C0158201
D0494601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65513465.281636%
B6551490.747977%
C65512183.327736%
D6551639297.572890%

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 7605 6550 269 269 3.54% 4.11%
B 7605 6550 3 3 0.04% 0.05%
C 7605 6550 208 208 2.74% 3.18%
D 7605 6550 5118 5118 67.30% 78.14%

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 0 8 465372 2785.49 674 658 166.8
A 3 45 281849 1685.46 674 658 166.8
A 15 32 211470 1263.61 674 658 166.8
B 7 252 26844 175.53 687 662 149.2
B 12 111 17913 115.65 687 662 149.2
B 11 111 16671 107.33 687 662 149.2
C 6 223 444486 2438.07 660 655 182.0
C 4 5 225243 1233.72 660 655 182.0
C 12 252 172670 944.92 660 655 182.0
D 15 94 12053025 213293.9 190 181 56.5
D 15 93 898164 15891.21 190 181 56.5
D 15 110 665597 11775.58 190 181 56.5

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