ASTROSAT CZTI

Data Quality Report

Orbit 33631

Creation date: 2024-06-27T20:50:52.859116
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/AS1T04_076T01_9000004810_33631cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33631cztM0_level2_quad_clean.evt
Size (bytes)530,038,08071,818,560
Size505.5 MB 68.5 MB
Events in quadrant A2,900,324451,086
Events in quadrant B4,595,743431,161
Events in quadrant C3,638,094453,049
Events in quadrant D4,513,990422,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125092
B0176131
C0148221
D0176111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968180.301609%
B59685749.617962%
C5968470.787534%
D59682494.172252%

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 7281 5969 13 13 0.18% 0.22%
B 7281 5969 460 460 6.32% 7.71%
C 7281 5969 38 38 0.52% 0.64%
D 7281 5969 230 230 3.16% 3.85%

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 7 16 96766 679.55 695 679 141.4
A 15 169 69754 488.52 695 679 141.4
A 15 237 21817 149.49 695 679 141.4
B 5 172 1396774 10845.04 667 651 128.7
B 5 255 329089 2551.3 667 651 128.7
B 4 171 52367 401.73 667 651 128.7
C 3 233 406562 2605.11 675 681 155.8
C 15 214 273919 1753.75 675 681 155.8
C 0 10 245498 1571.33 675 681 155.8
D 8 195 707912 4129.16 662 646 171.3
D 2 250 516643 3012.49 662 646 171.3
D 13 249 302352 1761.42 662 646 171.3

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