ASTROSAT CZTI

Data Quality Report

Orbit 52569

Creation date: 2025-06-17T11:58:23.971567
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_52569cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52569cztM0_level2_quad_clean.evt
Size (bytes)601,588,80090,181,440
Size573.7 MB 86.0 MB
Events in quadrant A3,203,401620,141
Events in quadrant B5,161,949659,909
Events in quadrant C5,838,992538,388
Events in quadrant D7,574,102469,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141962
B0196532
C0219822
D0269642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63291121.769632%
B63302463.886256%
C633084713.380727%
D6330125719.857820%

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 7539 6330 69 69 0.92% 1.09%
B 7540 6331 195 195 2.59% 3.08%
C 7540 6331 686 686 9.10% 10.84%
D 7540 6331 1133 1133 15.03% 17.90%

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 5 243 180510 1070.31 665 648 168.0
A 13 248 96316 569.29 665 648 168.0
A 15 174 64756 381.49 665 648 168.0
B 10 254 1370750 9842.18 658 635 139.2
B 10 44 265490 1902.58 658 635 139.2
B 4 81 143222 1024.27 658 635 139.2
C 15 248 2292088 13330.06 623 618 171.9
C 15 224 598317 3476.97 623 618 171.9
C 13 3 253738 1472.46 623 618 171.9
D 8 176 2162492 12654.31 590 563 170.8
D 6 42 628306 3674.34 590 563 170.8
D 2 62 595853 3484.38 590 563 170.8

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