ASTROSAT CZTI

Data Quality Report

Orbit 52843

Creation date: 2025-07-16T10:03:04.887062
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_011T08_9000006482_52843cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52843cztM0_level2_quad_clean.evt
Size (bytes)608,022,72083,381,760
Size579.9 MB 79.5 MB
Events in quadrant A6,305,348549,522
Events in quadrant B5,529,477582,635
Events in quadrant C4,834,048488,829
Events in quadrant D5,378,390488,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229421
B0204551
C0188731
D0201142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59415569.358694%
B59425158.667115%
C594282513.884214%
D594165010.940919%

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 6961 5942 459 459 6.59% 7.72%
B 6962 5943 347 347 4.98% 5.84%
C 6962 5943 659 659 9.47% 11.09%
D 6961 5942 555 555 7.97% 9.34%

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 9 191 1546166 10104.33 609 596 153.0
A 3 62 703661 4596.36 609 596 153.0
A 12 80 525919 3434.35 609 596 153.0
B 8 3 1658543 12940.1 603 583 128.1
B 5 172 831470 6484.93 603 583 128.1
B 10 254 117842 915.19 603 583 128.1
C 15 224 2193313 13927.23 567 562 157.4
C 15 147 117942 745.54 567 562 157.4
C 12 249 66955 421.69 567 562 157.4
D 8 176 2312096 13634.14 582 556 169.5
D 7 96 123386 724.49 582 556 169.5
D 11 176 101613 596.06 582 556 169.5

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