ASTROSAT CZTI

Data Quality Report

Orbit 38810

Creation date: 2024-06-27T21:56:44.948331
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_061T07_9000005402_38810cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38810cztM0_level2_quad_clean.evt
Size (bytes)341,069,76091,229,760
Size325.3 MB 87.0 MB
Events in quadrant A2,791,828620,145
Events in quadrant B2,390,597652,228
Events in quadrant C2,500,969612,523
Events in quadrant D4,550,775526,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0103072
C0102422
D0170542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5023200.398168%
B5023110.218993%
C502350.099542%
D50233306.569779%

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 7146 5024 17 17 0.24% 0.34%
B 7146 5024 3 3 0.04% 0.06%
C 7146 5024 2 2 0.03% 0.04%
D 7146 5024 278 278 3.89% 5.53%

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 373865 3195.56 579 569 116.8
A 13 248 74718 634.74 579 569 116.8
A 12 16 47628 402.84 579 569 116.8
B 0 230 50422 440.17 587 572 113.3
B 4 170 28644 247.87 587 572 113.3
B 12 111 13830 117.07 587 572 113.3
C 15 214 224407 1668.75 579 583 134.1
C 0 10 17578 126.71 579 583 134.1
C 13 61 3881 24.59 579 583 134.1
D 12 227 1110062 8286.48 553 538 133.9
D 2 16 586542 4376.57 553 538 133.9
D 2 249 317820 2369.62 553 538 133.9

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