ASTROSAT CZTI

Data Quality Report

Orbit 38986

Creation date: 2024-06-27T21:59:00.706250
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/AS1A12_095T02_9000005420_38986cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38986cztM0_level2_quad_clean.evt
Size (bytes)330,488,64089,599,680
Size315.2 MB 85.4 MB
Events in quadrant A2,699,261607,922
Events in quadrant B2,334,528621,560
Events in quadrant C2,495,157592,831
Events in quadrant D4,300,621528,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112732
B0105321
C0106301
D0163631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183160.308702%
B518390.173645%
C518330.057882%
D51833095.961798%

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 7096 5184 4 4 0.06% 0.08%
B 7096 5184 1 1 0.01% 0.02%
C 7096 5184 0 0 0.00% 0.00%
D 7096 5184 343 343 4.83% 6.62%

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 10 83 394520 3369.81 578 566 116.9
A 15 222 39569 333.62 578 566 116.9
A 15 223 11766 95.8 578 566 116.9
B 5 172 45387 402.16 577 562 111.5
B 0 230 15735 136.13 577 562 111.5
B 12 111 13944 120.06 577 562 111.5
C 15 214 221363 1666.83 567 573 132.5
C 1 128 45102 336.17 567 573 132.5
C 14 67 7155 49.69 567 573 132.5
D 12 235 1539087 11341.03 553 538 135.7
D 12 227 540974 3983.69 553 538 135.7
D 2 249 46990 342.41 553 538 135.7

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