ASTROSAT CZTI

Data Quality Report

Orbit 20090

Creation date: 2024-06-27T18:11:08.893837
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/AS1A05_180T01_9000002992_20090cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20090cztM0_level2_quad_clean.evt
Size (bytes)510,592,32071,426,880
Size486.9 MB 68.1 MB
Events in quadrant A3,973,515435,256
Events in quadrant B3,608,802447,273
Events in quadrant C3,701,794420,990
Events in quadrant D3,754,335421,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156861
B0145001
C0147081
D0150221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62702624.178628%
B62701592.535885%
C62701963.125997%
D62701362.169059%

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 7565 6271 86 86 1.14% 1.37%
B 7565 6271 13 13 0.17% 0.21%
C 7565 6271 35 35 0.46% 0.56%
D 7565 6271 22 22 0.29% 0.35%

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 14 238 365933 2045.69 904 891 178.4
A 14 254 70803 391.78 904 891 178.4
A 4 2 30930 168.34 904 891 178.4
B 4 80 45872 271.86 896 880 165.5
B 0 182 24720 144.05 896 880 165.5
B 12 111 19533 112.71 896 880 165.5
C 4 254 228680 1170.18 854 865 194.7
C 14 238 137337 700.99 854 865 194.7
C 3 233 8436 38.89 854 865 194.7
D 1 52 311712 1484.61 881 862 209.4
D 12 218 87307 412.86 881 862 209.4
D 2 234 28562 132.29 881 862 209.4

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