ASTROSAT CZTI

Data Quality Report

Orbit 26260

Creation date: 2024-06-27T19:26:43.445753
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/AS1A09_079T03_9000003790_26260cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26260cztM0_level2_quad_clean.evt
Size (bytes)434,617,92080,343,360
Size414.5 MB 76.6 MB
Events in quadrant A2,879,306507,724
Events in quadrant B2,904,891525,876
Events in quadrant C4,108,616481,143
Events in quadrant D2,859,650497,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125050
B0125070
C0160310
D0128040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6028651.078301%
B6029741.227401%
C60295118.475701%
D6029400.663460%

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 6848 6029 0 0 0.00% 0.00%
B 6849 6030 4 4 0.06% 0.07%
C 6849 6030 387 387 5.65% 6.42%
D 6849 6030 8 8 0.12% 0.13%

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 0 13 54479 364.4 732 717 147.5
A 13 254 9513 59.62 732 717 147.5
A 3 137 6734 40.78 732 717 147.5
B 0 245 32490 226.25 730 710 140.5
B 12 111 16802 114.57 730 710 140.5
B 11 111 15051 102.1 730 710 140.5
C 2 16 1071070 6709.02 681 685 159.5
C 4 254 186290 1163.35 681 685 159.5
C 14 238 109043 679.17 681 685 159.5
D 1 52 116164 676.03 709 691 170.8
D 12 233 44317 255.41 709 691 170.8
D 2 234 25114 142.98 709 691 170.8

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