ASTROSAT CZTI

Data Quality Report

Orbit 04902

Creation date: 2024-06-27T14:48:37.639706
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/AS1G05_237T01_9000000620_04902cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04902cztM0_level2_quad_clean.evt
Size (bytes)2,937,977,280257,434,560
Size2.7 GB 245.5 MB
Events in quadrant A13,598,2151,690,568
Events in quadrant B13,038,8011,691,419
Events in quadrant C11,098,0651,686,030
Events in quadrant D49,598,0151,045,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0567094
B0550514
C0502084
D016400012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244046102.499590%
B244043411.397312%
C244041410.577774%
D244031883877.195427%

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 28587 24407 319 319 1.12% 1.31%
B 28587 24407 52 52 0.18% 0.21%
C 28587 24407 0 0 0.00% 0.00%
D 28586 24403 15130 15130 52.93% 62.00%

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 0 31 1064073 1779.92 2917 2864 596.2
A 0 50 800412 1337.69 2917 2864 596.2
A 8 15 231376 383.27 2917 2864 596.2
B 15 204 646718 1149.15 2943 2881 560.3
B 4 80 438625 777.74 2943 2881 560.3
B 15 54 167120 293.14 2943 2881 560.3
C 12 4 27658 37.86 2825 2854 655.2
C 13 61 22970 30.7 2825 2854 655.2
C 8 128 17498 22.35 2825 2854 655.2
D 2 63 39412207 90334.48 1767 1719 436.3
D 2 234 603636 1379.68 1767 1719 436.3
D 2 33 502674 1148.26 1767 1719 436.3

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