ASTROSAT CZTI

Data Quality Report

Orbit 11264

Creation date: 2024-06-27T16:10:25.020345
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/AS1A04_080T01_9000001644_11264cztM0_level2.evt modeM0/AS1A04_080T01_9000001644_11264cztM0_level2_quad_clean.evt
Size (bytes)804,951,36088,724,160
Size767.7 MB 84.6 MB
Events in quadrant A4,143,664561,418
Events in quadrant B5,549,273549,635
Events in quadrant C3,445,608565,291
Events in quadrant D10,727,758481,577

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170403
B0215122
C0156232
D0372462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7593791.040432%
B75936718.837087%
C7593560.737521%
D759388111.602792%

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 8998 7595 6 6 0.07% 0.08%
B 8998 7595 344 344 3.82% 4.53%
C 8998 7595 1 1 0.01% 0.01%
D 8998 7595 619 619 6.88% 8.15%

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 13 251 243572 1312.12 901 880 185.0
A 8 5 99811 534.87 901 880 185.0
A 14 238 73305 391.57 901 880 185.0
B 4 239 1306306 7576.01 883 862 172.3
B 3 64 627711 3637.85 883 862 172.3
B 11 51 45148 257.01 883 862 172.3
C 13 61 6543 27.22 882 885 207.9
C 5 239 6065 24.92 882 885 207.9
C 12 4 2281 6.71 882 885 207.9
D 1 52 5691386 28232.55 832 809 201.6
D 13 152 690358 3421.05 832 809 201.6
D 10 253 362368 1793.8 832 809 201.6

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