ASTROSAT CZTI

Data Quality Report

Orbit 54604

Creation date: 2025-11-01T11:19:48.044595
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_066T07_9000006522_54604cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54604cztM0_level2_quad_clean.evt
Size (bytes)539,593,92096,670,080
Size514.6 MB 92.2 MB
Events in quadrant A6,502,610625,021
Events in quadrant B4,074,168672,129
Events in quadrant C3,602,801618,896
Events in quadrant D5,288,979556,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239054
B0166982
C0151892
D0203482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65185728.775698%
B65184106.290273%
C65181322.025161%
D65184076.244247%

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 7668 6519 484 484 6.31% 7.42%
B 7668 6519 167 167 2.18% 2.56%
C 7668 6519 90 90 1.17% 1.38%
D 7668 6519 437 437 5.70% 6.70%

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 14 3141487 17855.05 709 692 175.9
A 11 3 240981 1366.01 709 692 175.9
A 13 248 168683 955.01 709 692 175.9
B 1 207 507252 3355.33 703 679 151.0
B 5 172 421442 2786.96 703 679 151.0
B 10 247 150964 995.43 703 679 151.0
C 13 3 348317 1789.49 708 701 194.3
C 6 223 149425 765.61 708 701 194.3
C 3 248 86059 439.41 708 701 194.3
D 9 19 1658886 8372.05 690 658 198.1
D 8 160 274604 1383.1 690 658 198.1
D 5 113 116004 582.36 690 658 198.1

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