ASTROSAT CZTI

Data Quality Report

Orbit 33182

Creation date: 2024-06-27T20:45:49.070246
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_080T02_9000004768_33182cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33182cztM0_level2_quad_clean.evt
Size (bytes)510,583,68085,311,360
Size486.9 MB 81.4 MB
Events in quadrant A2,699,715554,425
Events in quadrant B3,956,547545,089
Events in quadrant C2,868,059554,764
Events in quadrant D5,541,560519,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119602
B0157471
C0124421
D0207511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5860100.170648%
B58603495.955631%
C5860591.006826%
D58603636.194539%

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 7172 5861 4 4 0.06% 0.07%
B 7172 5861 186 186 2.59% 3.17%
C 7172 5861 37 37 0.52% 0.63%
D 7172 5861 280 280 3.90% 4.78%

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 14 254 37255 265.95 684 671 137.6
A 13 6 12598 86.71 684 671 137.6
A 13 254 10643 72.49 684 671 137.6
B 5 172 673957 5263.42 665 649 127.9
B 0 219 404963 3160.62 665 649 127.9
B 0 190 59509 460.12 665 649 127.9
C 0 10 166303 1078.64 662 668 153.6
C 14 67 33795 215.73 662 668 153.6
C 1 23 33529 214.0 662 668 153.6
D 8 195 1498931 9113.59 646 632 164.4
D 12 218 397610 2414.67 646 632 164.4
D 12 6 247685 1502.73 646 632 164.4

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