ASTROSAT CZTI

Data Quality Report

Orbit 12378

Creation date: 2024-06-27T16:26:22.751849
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/AS1G08_072T03_9000001836_12378cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12378cztM0_level2_quad_clean.evt
Size (bytes)933,534,72079,824,960
Size890.3 MB 76.1 MB
Events in quadrant A4,367,428512,153
Events in quadrant B13,281,426387,424
Events in quadrant C5,444,942508,167
Events in quadrant D4,681,514496,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177163
B0444852
C0211932
D0188862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73583084.185920%
B7358475364.596358%
C73585467.420495%
D73583695.014950%

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 9109 7359 5 5 0.05% 0.07%
B 9108 7358 4434 4434 48.68% 60.26%
C 9109 7359 287 287 3.15% 3.90%
D 9109 7359 159 159 1.75% 2.16%

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 1 162 243350 1298.71 915 896 186.7
A 13 251 172735 920.46 915 896 186.7
A 1 178 122241 649.99 915 896 186.7
B 2 32 5941662 53202.04 584 571 111.7
B 2 48 4516719 40441.78 584 571 111.7
B 4 239 253950 2268.99 584 571 111.7
C 15 208 1869411 9050.57 887 895 206.5
C 14 234 108364 520.55 887 895 206.5
C 13 61 6571 27.49 887 895 206.5
D 1 52 1113790 5187.05 892 867 214.6
D 13 104 83421 384.76 892 867 214.6
D 8 195 46553 212.93 892 867 214.6

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