ASTROSAT CZTI

Data Quality Report

Orbit 52565

Creation date: 2025-06-17T02:05:42.703579
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/AS1C09_011T06_9000006478_52565cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52565cztM0_level2_quad_clean.evt
Size (bytes)637,269,12091,540,800
Size607.7 MB 87.3 MB
Events in quadrant A4,112,415641,844
Events in quadrant B5,576,153628,633
Events in quadrant C4,975,031581,208
Events in quadrant D8,406,949452,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169671
B0210701
C0196031
D0297271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66972033.031208%
B66986499.689460%
C66984546.778143%
D6698181327.067781%

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 7582 6698 170 170 2.24% 2.54%
B 7583 6699 525 525 6.92% 7.84%
C 7583 6699 368 368 4.85% 5.49%
D 7583 6699 1088 1088 14.35% 16.24%

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 5 243 542340 3065.9 706 688 176.7
A 4 249 340715 1924.65 706 688 176.7
A 7 112 223924 1263.58 706 688 176.7
B 10 44 1522821 10630.48 671 646 143.2
B 7 0 268921 1873.56 671 646 143.2
B 13 245 236237 1645.31 671 646 143.2
C 13 3 891969 4765.66 675 669 187.0
C 15 248 837659 4475.27 675 669 187.0
C 15 224 229985 1226.12 675 669 187.0
D 8 176 2129502 12527.37 579 551 169.9
D 7 38 1309396 7701.62 579 551 169.9
D 15 125 466037 2739.05 579 551 169.9

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