ASTROSAT CZTI

Data Quality Report

Orbit 52002

Creation date: 2025-05-10T01:10:43.288635
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_011T06_9000006468_52002cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52002cztM0_level2_quad_clean.evt
Size (bytes)809,841,60080,847,360
Size772.3 MB 77.1 MB
Events in quadrant A8,816,401447,441
Events in quadrant B4,085,125654,984
Events in quadrant C6,425,916526,397
Events in quadrant D10,166,901382,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305771
B0164441
C0234621
D0345631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258198631.735379%
B62582063.291787%
C625790414.447818%
D6257223235.672047%

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 7413 6258 1729 1729 23.32% 27.63%
B 7413 6258 115 115 1.55% 1.84%
C 7412 6257 833 833 11.24% 13.31%
D 7412 6257 2113 2113 28.51% 33.77%

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 64 2573824 17900.88 573 559 143.8
A 2 48 1799909 12517.15 573 559 143.8
A 3 14 556670 3868.57 573 559 143.8
B 4 206 264710 1905.62 664 642 138.6
B 12 32 146959 1055.88 664 642 138.6
B 10 247 132871 954.22 664 642 138.6
C 15 224 2211736 12859.86 621 619 171.9
C 9 38 743751 4322.06 621 619 171.9
C 4 5 354598 2058.74 621 619 171.9
D 6 42 2702428 17212.28 548 523 157.0
D 12 17 1532513 9759.42 548 523 157.0
D 8 176 1231129 7839.48 548 523 157.0

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