ASTROSAT CZTI

Data Quality Report

Orbit 30775

Creation date: 2024-06-27T20:19:28.492642
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/AS1A10_071T12_9000004446_30775cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30775cztM0_level2_quad_clean.evt
Size (bytes)604,241,28074,200,320
Size576.2 MB 70.8 MB
Events in quadrant A3,473,051472,309
Events in quadrant B5,213,487471,432
Events in quadrant C4,279,385440,167
Events in quadrant D4,909,271424,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138632
B0194532
C0167562
D0188062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6276841.338432%
B62761722.740599%
C62763395.401530%
D62762283.632887%

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 7561 6276 0 0 0.00% 0.00%
B 7561 6276 2 2 0.03% 0.03%
C 7561 6276 149 149 1.97% 2.37%
D 7561 6276 208 208 2.75% 3.31%

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 13 254 10686 54.85 901 887 178.7
A 3 137 8445 42.3 901 887 178.7
A 0 226 7627 37.72 901 887 178.7
B 6 159 1700618 10220.69 886 869 166.3
B 12 111 19839 114.07 886 869 166.3
B 11 111 18219 104.33 886 869 166.3
C 0 10 790177 4187.28 815 821 188.5
C 3 233 154531 815.38 815 821 188.5
C 14 238 134615 709.73 815 821 188.5
D 8 195 1419826 6707.05 840 823 211.6
D 13 249 146641 689.22 840 823 211.6
D 2 250 101880 477.66 840 823 211.6

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