ASTROSAT CZTI

Data Quality Report

Orbit 54410

Creation date: 2025-10-19T05:20:00.789982
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_126T19_9000006518_54410cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54410cztM0_level2_quad_clean.evt
Size (bytes)540,394,56094,199,040
Size515.4 MB 89.8 MB
Events in quadrant A2,923,038669,471
Events in quadrant B3,069,954696,273
Events in quadrant C6,319,142497,294
Events in quadrant D7,170,166521,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139471
B0141241
C0237961
D0260821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6708360.536673%
B6708460.685748%
C6708143321.362552%
D670899214.788312%

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 7593 6708 6 6 0.08% 0.09%
B 7593 6708 8 8 0.11% 0.12%
C 7593 6708 1360 1360 17.91% 20.27%
D 7593 6708 1000 1000 13.17% 14.91%

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 0 8 52659 285.16 726 708 182.2
A 7 206 20634 109.38 726 708 182.2
A 13 254 13260 68.9 726 708 182.2
B 0 213 99422 642.66 714 689 153.6
B 0 171 42472 271.97 714 689 153.6
B 10 247 36639 234.0 714 689 153.6
C 1 241 3368069 19423.87 622 617 173.4
C 14 254 116846 670.42 622 617 173.4
C 1 29 103314 592.37 622 617 173.4
D 8 176 1954297 10289.33 661 630 189.9
D 15 108 1716218 9035.44 661 630 189.9
D 2 172 309525 1626.85 661 630 189.9

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