ASTROSAT CZTI

Data Quality Report

Orbit 33811

Creation date: 2024-06-27T20:52:49.502571
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_077T01_9000004824_33811cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33811cztM0_level2_quad_clean.evt
Size (bytes)564,857,28056,208,960
Size538.7 MB 53.6 MB
Events in quadrant A2,611,525344,214
Events in quadrant B3,027,496344,608
Events in quadrant C2,985,692338,004
Events in quadrant D8,123,270303,532

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108733
B0121152
C0119212
D0278622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5301180.339559%
B5301641.207319%
C5301340.641388%
D5301143627.089228%

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 7064 5302 8 8 0.11% 0.15%
B 7064 5302 32 32 0.45% 0.60%
C 7064 5302 31 31 0.44% 0.58%
D 7064 5302 1474 1474 20.87% 27.80%

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 44937 336.09 657 645 131.8
A 13 6 20531 150.89 657 645 131.8
A 10 83 10222 72.67 657 645 131.8
B 5 172 276172 2208.72 647 630 124.8
B 4 251 60987 483.82 647 630 124.8
B 0 190 32235 253.34 647 630 124.8
C 15 214 174298 1187.93 633 639 146.2
C 10 49 127956 870.92 633 639 146.2
C 0 10 116688 793.84 633 639 146.2
D 12 235 3791108 26154.72 585 568 144.9
D 8 195 1091188 7525.27 585 568 144.9
D 2 250 384559 2649.54 585 568 144.9

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