ASTROSAT CZTI

Data Quality Report

Orbit 54344

Creation date: 2025-10-14T17:46:25.814195
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_126T15_9000006516_54344cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54344cztM0_level2_quad_clean.evt
Size (bytes)626,198,40087,756,480
Size597.2 MB 83.7 MB
Events in quadrant A4,677,596592,954
Events in quadrant B3,094,551680,397
Events in quadrant C4,881,767567,998
Events in quadrant D10,008,564351,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187731
B0141651
C0194581
D0343641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66576419.628962%
B66571121.682440%
C66585327.990388%
D6658277941.739261%

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 7522 6659 558 558 7.42% 8.38%
B 7522 6659 19 19 0.25% 0.29%
C 7523 6659 470 470 6.25% 7.06%
D 7522 6659 2452 2452 32.60% 36.82%

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 5 242 872426 5200.16 680 662 167.6
A 15 174 824549 4914.57 680 662 167.6
A 7 14 248849 1480.46 680 662 167.6
B 10 247 131013 884.57 690 665 147.4
B 0 213 55798 374.15 690 665 147.4
B 0 171 48144 322.2 690 665 147.4
C 1 241 1075485 6046.42 648 641 177.8
C 13 3 611688 3437.38 648 641 177.8
C 12 2 282614 1586.21 648 641 177.8
D 8 176 3283544 22326.16 514 491 147.0
D 15 108 3144278 21379.09 514 491 147.0
D 2 62 1169324 7948.56 514 491 147.0

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