ASTROSAT CZTI

Data Quality Report

Orbit 50513

Creation date: 2025-01-29T19:31:15.938027
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/AS1T05_239T01_9000006444_50513cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50513cztM0_level2_quad_clean.evt
Size (bytes)1,191,283,20069,609,600
Size1.1 GB 66.4 MB
Events in quadrant A6,674,214628,782
Events in quadrant B3,875,745738,520
Events in quadrant C15,299,822197,271
Events in quadrant D17,679,72530,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248370
B0166551
C0505340
D0574190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A735273610.010881%
B7352791.074538%
C7352542673.803047%
D7352706596.096300%

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 7352 7352 612 612 8.32% 8.32%
B 7352 7352 68 68 0.92% 0.92%
C 7352 7352 4841 4841 65.85% 65.85%
D 7352 7352 6909 6909 93.97% 93.97%

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 12 250 850295 4529.84 753 734 187.5
A 10 253 726499 3869.76 753 734 187.5
A 6 161 591680 3150.91 753 734 187.5
B 7 0 275719 1666.69 771 746 165.0
B 4 170 197230 1190.95 771 746 165.0
B 8 128 51557 307.98 771 746 165.0
C 12 249 3063454 25192.28 430 427 121.6
C 15 196 3022990 24859.48 430 427 121.6
C 15 214 2733185 22475.94 430 427 121.6
D 7 61 8613341 108256.47 260 250 79.6
D 15 184 5162657 64885.41 260 250 79.6
D 6 42 738208 9275.27 260 250 79.6

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