ASTROSAT CZTI

Data Quality Report

Orbit 35957

Creation date: 2022-06-09T05:29:01.131321
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/AS1A11_080T01_9000005146_35957cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35957cztM0_level2_quad_clean.evt
Size (bytes)828,653,76059,495,040
Size790.3 MB 56.7 MB
Events in quadrant A4,017,501409,375
Events in quadrant B11,808,894264,210
Events in quadrant C5,654,665365,344
Events in quadrant D3,271,716404,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150732
B0384591
C0202181
D0129341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50863987.825403%
B5086469792.351553%
C508690717.833268%
D5086651.278018%

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 7209 5087 351 351 4.87% 6.90%
B 7209 5087 4353 4353 60.38% 85.57%
C 7209 5087 773 773 10.72% 15.20%
D 7209 5087 56 56 0.78% 1.10%

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 15 169 1361682 10435.06 651 641 130.4
A 10 83 125257 955.43 651 641 130.4
A 13 6 7670 53.89 651 641 130.4
B 5 14 3102078 40218.23 403 395 77.1
B 5 31 3085252 40000.05 403 395 77.1
B 5 15 3075962 39879.59 403 395 77.1
C 9 187 2812664 21162.23 580 586 132.9
C 0 207 202305 1518.03 580 586 132.9
C 15 214 199354 1495.82 580 586 132.9
D 2 250 227681 1473.67 636 621 154.1
D 8 195 176428 1141.03 636 621 154.1
D 7 223 143510 927.38 636 621 154.1

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