ASTROSAT CZTI

Data Quality Report

Orbit 54603

Creation date: 2025-11-01T04:42:01.555240
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_54603cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54603cztM0_level2_quad_clean.evt
Size (bytes)482,639,04097,119,360
Size460.3 MB 92.6 MB
Events in quadrant A5,262,727628,271
Events in quadrant B4,019,494672,884
Events in quadrant C3,254,318620,990
Events in quadrant D4,832,540571,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198932
B0164382
C0142812
D0187742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63964577.145091%
B63963936.144465%
C63961081.688555%
D63963024.721701%

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 7566 6396 330 330 4.36% 5.16%
B 7566 6396 178 178 2.35% 2.78%
C 7566 6396 41 41 0.54% 0.64%
D 7566 6397 216 216 2.85% 3.38%

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 14 1740635 9920.23 711 693 175.4
A 11 3 335816 1910.69 711 693 175.4
A 0 8 178797 1015.45 711 693 175.4
B 1 207 561077 3698.78 707 683 151.5
B 5 172 399689 2633.57 707 683 151.5
B 10 247 74768 488.99 707 683 151.5
C 13 3 213335 1085.38 714 708 195.9
C 12 249 42529 213.48 714 708 195.9
C 12 250 32123 160.36 714 708 195.9
D 2 172 769598 3831.03 701 671 200.7
D 3 12 379891 1889.39 701 671 200.7
D 8 160 215374 1069.72 701 671 200.7

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