ASTROSAT CZTI

Data Quality Report

Orbit 21422

Creation date: 2024-06-27T18:27:38.440004
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_21422cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21422cztM0_level2_quad_clean.evt
Size (bytes)499,832,640103,921,920
Size476.7 MB 99.1 MB
Events in quadrant A3,588,216692,052
Events in quadrant B3,524,017697,928
Events in quadrant C3,453,444669,715
Events in quadrant D4,148,334651,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147892
B0145092
C0143352
D0164102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249841.344215%
B6249881.408225%
C62491352.160346%
D62491632.608417%

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 7574 6249 0 0 0.00% 0.00%
B 7574 6249 4 4 0.05% 0.06%
C 7574 6249 0 0 0.00% 0.00%
D 7574 6249 118 118 1.56% 1.89%

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 5 168 116692 655.0 894 879 176.8
A 11 47 27829 152.42 894 879 176.8
A 13 254 8550 43.38 894 879 176.8
B 0 190 47041 284.75 877 860 162.2
B 0 230 21834 129.32 877 860 162.2
B 12 111 18639 109.62 877 860 162.2
C 14 238 136065 702.39 841 850 192.5
C 3 233 23874 119.6 841 850 192.5
C 10 91 15434 75.76 841 850 192.5
D 14 34 328645 1556.04 864 841 210.7
D 7 38 203171 960.43 864 841 210.7
D 1 52 91143 428.65 864 841 210.7

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