ASTROSAT CZTI

Data Quality Report

Orbit 54487

Creation date: 2025-10-24T08:32:13.307054
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_126T19_9000006518_54487cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54487cztM0_level2_quad_clean.evt
Size (bytes)603,599,04090,984,960
Size575.6 MB 86.8 MB
Events in quadrant A3,094,054652,246
Events in quadrant B3,341,500708,964
Events in quadrant C3,418,198634,433
Events in quadrant D11,969,760293,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142982
B0147802
C0151002
D0400442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682881.316971%
B66821001.496558%
C6682831.242143%
D6682367554.998503%

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 9007 6684 50 50 0.56% 0.75%
B 9007 6684 30 30 0.33% 0.45%
C 9007 6684 74 74 0.82% 1.11%
D 9007 6684 3620 3620 40.19% 54.16%

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 8 245 148182 830.09 714 696 177.7
A 7 237 48606 269.65 714 696 177.7
A 4 249 36380 200.84 714 696 177.7
B 0 213 328917 2152.47 714 691 152.5
B 10 247 89738 583.96 714 691 152.5
B 1 207 44445 286.93 714 691 152.5
C 12 2 271592 1385.61 704 696 195.5
C 14 96 62685 317.07 704 696 195.5
C 1 243 52967 267.36 704 696 195.5
D 8 176 4962500 36315.53 472 450 136.6
D 2 172 4485097 32821.58 472 450 136.6
D 14 50 543201 3972.21 472 450 136.6

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