ASTROSAT CZTI

Data Quality Report

Orbit 54217

Creation date: 2025-10-06T07:07:24.343506
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_004T08_9000006514_54217cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54217cztM0_level2_quad_clean.evt
Size (bytes)878,405,76095,682,240
Size837.7 MB 91.2 MB
Events in quadrant A4,747,715711,301
Events in quadrant B4,047,986793,491
Events in quadrant C6,156,460596,490
Events in quadrant D16,961,981255,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196730
B0175590
C0239430
D0557328

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77683624.660144%
B7768821.055613%
C7768110614.237899%
D7767494263.628170%

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 7767 7767 285 285 3.67% 3.67%
B 7767 7767 57 57 0.73% 0.73%
C 7767 7767 936 936 12.05% 12.05%
D 7767 7766 5077 5077 65.37% 65.37%

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 7 29 663232 3264.24 806 784 202.9
A 15 174 300085 1474.82 806 784 202.9
A 4 3 116870 572.02 806 784 202.9
B 8 234 247438 1419.84 816 788 173.7
B 4 171 175053 1003.15 816 788 173.7
B 5 236 151193 865.8 816 788 173.7
C 15 198 1188327 5975.51 727 719 198.7
C 15 215 1055022 5304.78 727 719 198.7
C 15 216 485033 2436.85 727 719 198.7
D 8 176 10867181 73311.85 513 490 148.2
D 2 172 3374945 22765.67 513 490 148.2
D 1 3 121027 813.2 513 490 148.2

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