ASTROSAT CZTI

Data Quality Report

Orbit 51040

Creation date: 2025-03-06T07:11:50.434109
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/AS1C07_001T02_9000006452_51040cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51040cztM0_level2_quad_clean.evt
Size (bytes)851,351,04081,288,000
Size811.9 MB 77.5 MB
Events in quadrant A6,359,739588,123
Events in quadrant B5,356,234621,564
Events in quadrant C5,398,806568,612
Events in quadrant D13,880,833215,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236721
B0206241
C0209026
D0459291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67094015.977046%
B67105808.643815%
C67094877.258906%
D6709434064.689223%

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 7559 6710 294 294 3.89% 4.38%
B 7560 6711 376 376 4.97% 5.60%
C 7559 6710 423 423 5.60% 6.30%
D 7559 6710 4312 4312 57.04% 64.26%

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 12 3 1453242 8602.2 673 657 168.9
A 10 253 429804 2541.41 673 657 168.9
A 11 3 294381 1739.43 673 657 168.9
B 12 32 931034 6587.94 661 638 141.2
B 4 81 358236 2532.08 661 638 141.2
B 10 247 240261 1696.72 661 638 141.2
C 4 5 1068011 5820.52 657 651 183.4
C 13 3 601616 3277.18 657 651 183.4
C 12 249 210889 1146.47 657 651 183.4
D 15 93 9783259 84261.33 400 386 116.1
D 8 176 1605654 13826.41 400 386 116.1
D 9 1 135734 1165.77 400 386 116.1

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