ASTROSAT CZTI

Data Quality Report

Orbit 24631

Creation date: 2024-06-27T19:08:08.172789
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/AS1C05_012T06_9000003616_24631cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24631cztM0_level2_quad_clean.evt
Size (bytes)599,875,200107,605,440
Size572.1 MB 102.6 MB
Events in quadrant A2,779,718738,534
Events in quadrant B2,888,403748,262
Events in quadrant C8,708,223654,067
Events in quadrant D3,389,518702,844

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120641
B0123071
C0300466
D0138641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5942470.790979%
B5943711.194683%
C594295216.021542%
D59421161.952205%

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 6912 5942 1 1 0.01% 0.02%
B 6913 5943 5 5 0.07% 0.08%
C 6912 5942 321 321 4.64% 5.40%
D 6912 5942 70 70 1.01% 1.18%

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 6 16 16530 110.01 715 702 143.9
A 13 254 9929 64.13 715 702 143.9
A 3 137 6491 40.24 715 702 143.9
B 3 64 36009 259.08 710 693 136.3
B 0 230 22851 162.55 710 693 136.3
B 12 111 16512 116.05 710 693 136.3
C 7 247 5854428 38790.42 655 658 150.9
C 14 238 104287 686.7 655 658 150.9
C 10 91 101157 665.96 655 658 150.9
D 1 52 403090 2408.89 690 668 167.1
D 9 1 245185 1463.68 690 668 167.1
D 8 195 59803 353.98 690 668 167.1

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