ASTROSAT CZTI

Data Quality Report

Orbit 53561

Creation date: 2025-08-23T00:50:48.567169
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_004T05_9000006502_53561cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53561cztM0_level2_quad_clean.evt
Size (bytes)981,204,48090,846,720
Size935.7 MB 86.6 MB
Events in quadrant A12,967,679406,986
Events in quadrant B4,627,743772,958
Events in quadrant C9,596,440534,474
Events in quadrant D8,537,695503,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437472
B0191222
C0337992
D0307242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7644391351.190476%
B76443414.461015%
C7645208227.233486%
D7645214027.992152%

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 7749 7646 3374 3374 43.54% 44.13%
B 7749 7646 130 130 1.68% 1.70%
C 7750 7647 1757 1757 22.67% 22.98%
D 7750 7647 1556 1556 20.08% 20.35%

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 3 63 5240892 32229.98 651 633 162.6
A 15 174 2249913 13834.1 651 633 162.6
A 3 62 1244263 7648.89 651 633 162.6
B 2 249 468909 2593.52 841 811 180.5
B 5 185 202209 1115.86 841 811 180.5
B 0 213 125488 690.78 841 811 180.5
C 15 224 3188561 15997.62 720 710 199.3
C 1 241 1431346 7179.37 720 710 199.3
C 4 5 1093803 5485.48 720 710 199.3
D 8 176 3495923 17826.04 685 655 196.1
D 3 12 1125166 5735.06 685 655 196.1
D 2 120 199927 1016.3 685 655 196.1

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