ASTROSAT CZTI

Data Quality Report

Orbit 07422

Creation date: 2024-06-27T15:19:32.676413
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/AS1G06_138T01_9000001020_07422cztM0_level2.evt modeM0/AS1G06_138T01_9000001020_07422cztM0_level2_quad_clean.evt
Size (bytes)2,891,540,160463,521,600
Size2.7 GB 442.0 MB
Events in quadrant A19,159,9212,797,521
Events in quadrant B20,069,9502,866,881
Events in quadrant C22,359,0822,824,703
Events in quadrant D23,171,1592,690,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0857449
B0872768
C0930558
D09724711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08500
B08500
C08500
D08500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A416346911.659701%
B416347561.815824%
C416345011.203343%
D4163312322.959191%

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 50302 41644 4 4 0.01% 0.01%
B 50302 41644 21 21 0.04% 0.05%
C 50302 41645 7 7 0.01% 0.02%
D 50302 41643 521 521 1.04% 1.25%

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 13 251 61164 56.28 4941 4836 1000.9
A 0 226 47794 42.92 4941 4836 1000.9
A 12 194 43472 38.6 4941 4836 1000.9
B 0 214 501374 520.94 4981 4856 953.1
B 12 111 99514 99.31 4981 4856 953.1
B 4 81 88055 87.29 4981 4856 953.1
C 9 68 3447115 3081.6 4807 4824 1117.0
C 1 16 62086 51.26 4807 4824 1117.0
C 12 4 47809 38.48 4807 4824 1117.0
D 8 195 899655 763.93 4781 4630 1171.6
D 2 14 896708 761.41 4781 4630 1171.6
D 13 104 666849 565.22 4781 4630 1171.6

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