ASTROSAT CZTI

Data Quality Report

Orbit 35764

Creation date: 2022-07-18T21:48:11.451849
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_058T14_9000005134_35764cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35764cztM0_level2_quad_clean.evt
Size (bytes)417,689,28061,649,280
Size398.3 MB 58.8 MB
Events in quadrant A2,612,490380,862
Events in quadrant B3,421,745381,853
Events in quadrant C2,894,664375,044
Events in quadrant D3,358,764355,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110493
B0134812
C0117802
D0134122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532180.150348%
B53212083.909040%
C5321520.977260%
D53211482.781432%

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 7024 5322 0 0 0.00% 0.00%
B 7024 5322 129 129 1.84% 2.42%
C 7024 5322 34 34 0.48% 0.64%
D 7024 5322 167 167 2.38% 3.14%

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 155725 1219.87 626 614 127.2
A 13 6 14967 112.88 626 614 127.2
A 15 223 10801 80.12 626 614 127.2
B 5 172 469141 3945.83 616 599 118.7
B 5 255 280331 2355.77 616 599 118.7
B 0 213 120601 1010.6 616 599 118.7
C 15 214 225019 1587.83 604 608 141.3
C 1 23 189934 1339.59 604 608 141.3
C 0 10 97696 686.95 604 608 141.3
D 7 80 677199 4664.63 601 585 145.1
D 14 52 145309 997.74 601 585 145.1
D 13 249 55380 377.76 601 585 145.1

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