ASTROSAT CZTI

Data Quality Report

Orbit 28999

Creation date: 2024-06-27T19:59:00.569090
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/AS1A10_073T06_9000004156_28999cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28999cztM0_level2_quad_clean.evt
Size (bytes)691,513,92078,390,720
Size659.5 MB 74.8 MB
Events in quadrant A3,569,664492,214
Events in quadrant B4,046,539498,257
Events in quadrant C4,214,449473,023
Events in quadrant D8,599,592383,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155232
B0167942
C0172132
D0308433

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75671341.770847%
B75672092.761993%
C75671842.431611%
D7566153220.248480%

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 7867 7568 0 0 0.00% 0.00%
B 7867 7568 31 31 0.39% 0.41%
C 7867 7568 0 0 0.00% 0.00%
D 7866 7567 1101 1101 14.00% 14.55%

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 6 16 20856 107.02 915 892 186.5
A 13 254 13144 65.68 915 892 186.5
A 15 192 11182 55.16 915 892 186.5
B 10 245 436490 2445.74 913 886 178.1
B 12 111 22656 122.23 913 886 178.1
B 11 111 20777 111.68 913 886 178.1
C 3 233 631235 3040.62 879 883 207.3
C 14 238 140737 674.61 879 883 207.3
C 2 114 17994 82.54 879 883 207.3
D 1 52 4469600 23325.74 794 770 191.6
D 8 195 407736 2124.22 794 770 191.6
D 7 80 285698 1487.22 794 770 191.6

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