ASTROSAT CZTI

Data Quality Report

Orbit 18097

Creation date: 2024-06-27T17:45:24.180732
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_080T01_9000002686_18097cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18097cztM0_level2_quad_clean.evt
Size (bytes)601,441,920135,996,480
Size573.6 MB 129.7 MB
Events in quadrant A3,434,115932,814
Events in quadrant B3,736,917937,267
Events in quadrant C3,475,133914,609
Events in quadrant D7,066,868819,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153181
B0161191
C0151721
D0259231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7392540.730519%
B73921522.056277%
C73931321.785473%
D7393129717.543622%

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 7582 7394 1 1 0.01% 0.01%
B 7582 7394 16 16 0.21% 0.22%
C 7583 7395 0 0 0.00% 0.00%
D 7583 7395 1008 1008 13.29% 13.63%

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 4 2 47836 266.34 874 854 176.4
A 15 174 18200 98.33 874 854 176.4
A 0 226 7536 37.88 874 854 176.4
B 7 220 146343 882.97 869 846 164.8
B 3 64 55321 330.59 869 846 164.8
B 0 189 41702 247.94 869 846 164.8
C 14 238 129886 651.49 844 847 198.1
C 3 233 41552 205.51 844 847 198.1
C 2 1 7110 31.62 844 847 198.1
D 7 238 1953319 9987.47 796 770 195.5
D 11 176 1860096 9510.63 796 770 195.5
D 13 232 50414 253.93 796 770 195.5

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