ASTROSAT CZTI

Data Quality Report

Orbit 53111

Creation date: 2025-07-28T21:42:07.821864
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_9000006488_53111cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53111cztM0_level2_quad_clean.evt
Size (bytes)826,041,60088,464,960
Size787.8 MB 84.4 MB
Events in quadrant A12,509,974375,477
Events in quadrant B4,497,980686,151
Events in quadrant C8,964,336517,880
Events in quadrant D4,055,738604,272

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421060
B0184420
C0315800
D0170150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7098354749.971823%
B70992753.873785%
C7099160222.566559%
D70991011.422736%

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 7098 7098 3264 3264 45.98% 45.98%
B 7099 7099 234 234 3.30% 3.30%
C 7098 7098 1508 1508 21.25% 21.25%
D 7099 7099 117 117 1.65% 1.65%

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 9 191 9353220 62872.27 589 574 148.8
A 12 80 365837 2455.45 589 574 148.8
A 0 8 265135 1778.49 589 574 148.8
B 10 247 554690 3653.43 709 685 151.6
B 10 254 435113 2864.87 709 685 151.6
B 2 249 202373 1330.05 709 685 151.6
C 15 224 2436419 13550.51 648 640 179.8
C 15 157 1504616 8366.79 648 640 179.8
C 0 240 679228 3775.06 648 640 179.8
D 12 3 383850 1870.71 712 680 204.8
D 2 120 97910 474.69 712 680 204.8
D 3 12 94792 459.47 712 680 204.8

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