ASTROSAT CZTI

Data Quality Report

Orbit 34173

Creation date: 2024-06-27T20:57:24.151708
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/AS1A11_047T15_9000004882_34173cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34173cztM0_level2_quad_clean.evt
Size (bytes)522,685,44064,232,640
Size498.5 MB 61.3 MB
Events in quadrant A2,661,168397,776
Events in quadrant B3,617,789403,440
Events in quadrant C4,821,582391,853
Events in quadrant D4,364,011374,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114393
B0142892
C0181852
D0167222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5391150.278242%
B53912594.804303%
C53914127.642367%
D53912204.080876%

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 7154 5392 0 0 0.00% 0.00%
B 7154 5392 139 139 1.94% 2.58%
C 7154 5392 313 313 4.38% 5.80%
D 7154 5392 141 141 1.97% 2.61%

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 15 169 79774 592.13 660 645 133.6
A 10 83 22838 166.07 660 645 133.6
A 13 254 10514 73.85 660 645 133.6
B 5 31 286789 2297.81 652 635 124.5
B 5 15 217661 1742.71 652 635 124.5
B 5 172 112036 894.55 652 635 124.5
C 0 239 1439751 9931.92 627 631 144.9
C 0 10 698902 4819.04 627 631 144.9
C 15 214 225134 1549.38 627 631 144.9
D 8 195 1102968 6982.23 635 617 157.9
D 13 249 451309 2854.66 635 617 157.9
D 10 118 157931 996.42 635 617 157.9

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