ASTROSAT CZTI

Data Quality Report

Orbit 07494

Creation date: 2024-06-27T15:20:28.016602
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/AS1T01_156T01_9000001034_07494cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07494cztM0_level2_quad_clean.evt
Size (bytes)551,534,400110,427,840
Size526.0 MB 105.3 MB
Events in quadrant A3,784,481698,659
Events in quadrant B4,082,256713,610
Events in quadrant C3,744,767710,783
Events in quadrant D4,539,621656,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01724
B01728
C01726
D01722

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017064459
B017680471
C017037444
D019825763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8125610.750769%
B8136750.921829%
C8136550.676008%
D80962543.137352%

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 10267 8274 1 1 0.01% 0.01%
B 10267 8300 4 4 0.04% 0.05%
C 10268 8300 0 0 0.00% 0.00%
D 10267 8262 151 151 1.47% 1.83%

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 3 1 12630 58.88 974 955 198.3
A 15 239 12448 57.96 974 955 198.3
A 0 226 9578 43.49 974 955 198.3
B 0 214 149541 802.67 982 961 185.1
B 0 219 47186 249.72 982 961 185.1
B 15 54 27321 142.4 982 961 185.1
C 13 61 7308 28.38 959 966 223.5
C 12 4 4912 17.66 959 966 223.5
C 3 202 2352 6.2 959 966 223.5
D 1 52 441836 1907.94 942 916 231.1
D 2 152 353811 1527.04 942 916 231.1
D 2 136 74444 318.17 942 916 231.1

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