ASTROSAT CZTI

Data Quality Report

Orbit 53632

Creation date: 2025-08-27T19:22:17.735470
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_022T05_9000006504_53632cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53632cztM0_level2_quad_clean.evt
Size (bytes)932,126,40077,345,280
Size888.9 MB 73.8 MB
Events in quadrant A8,186,863488,168
Events in quadrant B7,880,337523,661
Events in quadrant C11,872,223319,133
Events in quadrant D6,054,274549,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288781
B0279331
C0395832
D0225441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604196429.739552%
B6604193629.315566%
C6603346352.445858%
D660369910.586097%

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 7559 6605 1655 1655 21.89% 25.06%
B 7559 6605 1320 1320 17.46% 19.98%
C 7558 6601 3225 3225 42.67% 48.86%
D 7558 6604 588 588 7.78% 8.90%

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 78 3351190 21193.94 633 618 158.1
A 4 95 696643 4402.69 633 618 158.1
A 15 174 541101 3418.81 633 618 158.1
B 4 206 2772012 20094.53 644 623 137.9
B 15 20 1303820 9449.1 644 623 137.9
B 5 172 330479 2391.69 644 623 137.9
C 1 241 6343982 47012.33 482 479 134.9
C 15 224 2605152 19303.49 482 479 134.9
C 10 22 394976 2923.66 482 479 134.9
D 8 176 1719879 8574.27 691 660 200.5
D 3 12 266001 1323.34 691 660 200.5
D 13 153 265835 1322.51 691 660 200.5

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