ASTROSAT CZTI

Data Quality Report

Orbit 42082

Creation date: 2024-06-27T22:36:37.030590
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_044T22_9000005740_42082cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42082cztM0_level2_quad_clean.evt
Size (bytes)352,241,28097,695,360
Size335.9 MB 93.2 MB
Events in quadrant A4,276,303649,002
Events in quadrant B2,572,485683,601
Events in quadrant C2,693,899651,929
Events in quadrant D3,067,623588,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164153
B0112652
C0111982
D0129042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55051332.415985%
B5505100.181653%
C550570.127157%
D55051202.179837%

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 9390 5507 82 82 0.87% 1.49%
B 9390 5507 5 5 0.05% 0.09%
C 9390 5507 0 0 0.00% 0.00%
D 9390 5507 102 102 1.09% 1.85%

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 15 222 1200634 9247.8 630 618 129.8
A 10 83 516849 3978.28 630 618 129.8
A 15 223 100496 769.7 630 618 129.8
B 3 112 50314 400.15 637 619 124.2
B 14 16 15832 122.5 637 619 124.2
B 12 111 15271 117.98 637 619 124.2
C 15 214 228346 1544.82 631 636 147.4
C 15 159 4303 24.88 631 636 147.4
C 13 61 4233 24.4 631 636 147.4
D 12 6 259267 1682.46 622 604 153.7
D 13 249 214879 1393.74 622 604 153.7
D 1 52 88230 569.96 622 604 153.7

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