ASTROSAT CZTI

Data Quality Report

Orbit 51586

Creation date: 2025-04-12T01:29:25.839056
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/AS1A13_037T05_9000006460_51586cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51586cztM0_level2_quad_clean.evt
Size (bytes)789,416,64081,207,360
Size752.8 MB 77.4 MB
Events in quadrant A6,777,337597,719
Events in quadrant B4,833,621725,019
Events in quadrant C9,959,69999,077
Events in quadrant D7,095,121539,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251050
B0192470
C0346320
D0260261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7133108015.140894%
B71343635.088310%
C7134609085.365854%
D7133104614.664237%

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 7133 7133 530 530 7.43% 7.43%
B 7134 7134 242 242 3.39% 3.39%
C 7134 7134 348 348 4.88% 4.88%
D 7133 7133 803 803 11.26% 11.26%

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 12 250 2336523 12828.81 733 715 182.1
A 12 3 510572 2800.26 733 715 182.1
A 8 249 496526 2723.11 733 715 182.1
B 10 44 738500 4496.95 762 738 164.1
B 1 223 278208 1691.29 762 738 164.1
B 7 252 148708 901.94 762 738 164.1
C 15 198 8871371 177822.53 173 172 49.9
C 15 182 107246 2146.29 173 172 49.9
C 13 3 89602 1792.62 173 172 49.9
D 8 176 964169 4894.96 700 676 196.8
D 12 6 717009 3639.28 700 676 196.8
D 6 228 695112 3528.03 700 676 196.8

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