ASTROSAT CZTI

Data Quality Report

Orbit 53294

Creation date: 2025-08-05T00:39:03.591273
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_9000006492_53294cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53294cztM0_level2_quad_clean.evt
Size (bytes)619,202,88091,261,440
Size590.5 MB 87.0 MB
Events in quadrant A4,372,952625,496
Events in quadrant B4,881,158653,457
Events in quadrant C8,786,186470,449
Events in quadrant D4,382,021565,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173932
B0188616
C03056320
D0175622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64353225.003885%
B64345147.988809%
C6430171826.718507%
D64342744.258626%

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 7520 6436 259 259 3.44% 4.02%
B 7519 6435 302 302 4.02% 4.69%
C 7519 6434 1564 1564 20.80% 24.31%
D 7519 6435 201 201 2.67% 3.12%

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 3 62 1265841 7345.62 690 672 172.2
A 7 206 160173 926.07 690 672 172.2
A 5 240 64366 369.81 690 672 172.2
B 2 249 923749 6410.12 673 650 144.0
B 10 254 398033 2759.48 673 650 144.0
B 4 81 386034 2676.16 673 650 144.0
C 15 178 1769323 10542.35 609 601 167.8
C 4 5 1432728 8536.09 609 601 167.8
C 15 224 1178637 7021.6 609 601 167.8
D 3 12 627381 3315.14 674 644 189.1
D 11 176 517716 2735.07 674 644 189.1
D 2 62 111836 588.15 674 644 189.1

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