ASTROSAT CZTI

Data Quality Report

Orbit 24942

Creation date: 2024-06-27T19:11:44.283803
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_200T01_9000003654_24942cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24942cztM0_level2_quad_clean.evt
Size (bytes)564,955,200121,158,720
Size538.8 MB 115.5 MB
Events in quadrant A2,950,095848,140
Events in quadrant B3,093,788862,240
Events in quadrant C3,818,552805,512
Events in quadrant D6,826,701720,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126691
B0130031
C0157521
D0245101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6203270.435273%
B6203420.677092%
C6203941.515396%
D6204141422.791747%

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 7284 6204 1 1 0.01% 0.02%
B 7284 6204 1 1 0.01% 0.02%
C 7284 6204 10 10 0.14% 0.16%
D 7285 6205 1344 1344 18.45% 21.66%

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 15 223 20068 128.18 755 740 150.8
A 13 254 9675 59.26 755 740 150.8
A 4 2 9095 55.41 755 740 150.8
B 10 251 34106 236.46 750 733 141.1
B 0 190 32430 224.58 750 733 141.1
B 0 229 29027 200.47 750 733 141.1
C 7 247 847971 5193.83 712 717 163.1
C 14 238 116586 710.3 712 717 163.1
C 0 207 72505 440.07 712 717 163.1
D 1 52 3652406 22706.43 673 654 160.8
D 7 238 293343 1819.93 673 654 160.8
D 1 3 80280 495.11 673 654 160.8

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