ASTROSAT CZTI

Data Quality Report

Orbit 21427

Creation date: 2024-06-27T18:27:42.771777
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/AS1T03_140T01_9000003160_21427cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21427cztM0_level2_quad_clean.evt
Size (bytes)578,041,920105,261,120
Size551.3 MB 100.4 MB
Events in quadrant A3,572,490684,019
Events in quadrant B3,653,765692,840
Events in quadrant C3,533,320669,569
Events in quadrant D6,240,773622,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155912
B0156972
C0154022
D0236243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7449430.577259%
B7449660.886025%
C7449640.859176%
D74497079.491207%

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 8264 7451 0 0 0.00% 0.00%
B 8264 7450 3 3 0.04% 0.04%
C 8264 7451 0 0 0.00% 0.00%
D 8264 7451 592 592 7.16% 7.95%

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 11 47 40576 215.57 909 888 184.1
A 3 1 16008 82.13 909 888 184.1
A 13 254 12012 60.42 909 888 184.1
B 0 230 49288 277.04 904 880 174.7
B 0 228 23174 127.59 904 880 174.7
B 5 172 21615 118.67 904 880 174.7
C 14 238 137216 668.38 864 869 204.0
C 8 222 21236 99.84 864 869 204.0
C 13 61 6198 26.12 864 869 204.0
D 12 235 1042415 5043.03 852 828 206.5
D 13 153 848839 4105.8 852 828 206.5
D 1 52 403302 1948.65 852 828 206.5

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