ASTROSAT CZTI

Data Quality Report

Orbit 42039

Creation date: 2024-06-27T22:36:04.524265
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_037T01_9000005736_42039cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42039cztM0_level2_quad_clean.evt
Size (bytes)322,119,36093,571,200
Size307.2 MB 89.2 MB
Events in quadrant A3,055,977638,063
Events in quadrant B2,684,213658,230
Events in quadrant C2,706,631616,216
Events in quadrant D3,066,907552,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122353
B0112302
C0110832
D0126702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5262120.228050%
B5262400.760167%
C526270.133029%
D52621402.660585%

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 7325 5263 10 10 0.14% 0.19%
B 7325 5263 25 25 0.34% 0.48%
C 7325 5263 2 2 0.03% 0.04%
D 7325 5263 121 121 1.65% 2.30%

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 532172 4193.05 619 608 126.8
A 12 189 61853 483.11 619 608 126.8
A 2 79 51072 398.07 619 608 126.8
B 5 255 141690 1181.69 618 603 119.4
B 5 32 48580 401.84 618 603 119.4
B 0 190 30181 247.73 618 603 119.4
C 15 214 220946 1569.56 601 606 140.4
C 8 79 108598 769.27 601 606 140.4
C 7 220 21546 149.16 601 606 140.4
D 13 249 326289 2289.98 588 573 142.2
D 12 6 261221 1832.51 588 573 142.2
D 2 249 112176 784.64 588 573 142.2

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