ASTROSAT CZTI

Data Quality Report

Orbit 54665

Creation date: 2025-11-05T08:25:26.412579
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_066T07_9000006522_54665cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54665cztM0_level2_quad_clean.evt
Size (bytes)704,306,880100,840,320
Size671.7 MB 96.2 MB
Events in quadrant A3,656,105728,375
Events in quadrant B5,046,525708,979
Events in quadrant C6,227,735612,626
Events in quadrant D10,551,391474,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166480
B0204220
C0239310
D0366310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75971131.487429%
B75977319.622219%
C759788111.596683%
D7597241531.788864%

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 7597 7597 61 61 0.80% 0.80%
B 7597 7597 295 295 3.88% 3.88%
C 7597 7597 625 625 8.23% 8.23%
D 7597 7597 2133 2133 28.08% 28.08%

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 11 3 283416 1360.29 843 824 207.7
A 0 8 68442 325.49 843 824 207.7
A 13 254 18318 84.21 843 824 207.7
B 2 249 1199206 6871.6 803 773 174.4
B 1 207 243556 1392.07 803 773 174.4
B 10 14 157398 898.06 803 773 174.4
C 3 242 2772371 12753.14 786 779 217.3
C 14 254 126526 578.61 786 779 217.3
C 6 223 88340 402.9 786 779 217.3
D 11 129 5497841 27692.97 697 665 198.5
D 11 176 1942457 9782.11 697 665 198.5
D 2 252 139343 698.61 697 665 198.5

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