ASTROSAT CZTI

Data Quality Report

Orbit 17612

Creation date: 2024-06-27T17:38:35.822664
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/AS1T03_012T01_9000002606_17612cztM0_level2.evt modeM0/AS1T03_012T01_9000002606_17612cztM0_level2_quad_clean.evt
Size (bytes)966,556,800180,820,800
Size921.8 MB 172.4 MB
Events in quadrant A6,390,6771,149,704
Events in quadrant B6,546,8831,160,537
Events in quadrant C8,938,4401,107,679
Events in quadrant D6,463,7461,106,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281653
B0285403
C0363133
D0292003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13781630.457151%
B13782980.711072%
C137822591.879263%
D137821320.957771%

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 16186 13784 0 0 0.00% 0.00%
B 16187 13785 2 2 0.01% 0.01%
C 16187 13783 0 0 0.00% 0.00%
D 16187 13785 57 57 0.35% 0.41%

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 16544 44.87 1654 1616 332.7
A 0 226 14368 38.33 1654 1616 332.7
A 3 137 12812 33.65 1654 1616 332.7
B 12 111 37981 116.11 1645 1607 313.3
B 0 230 34742 105.77 1645 1607 313.3
B 0 189 33393 101.46 1645 1607 313.3
C 3 233 2452571 6717.32 1574 1580 364.9
C 14 238 245626 668.85 1574 1580 364.9
C 5 218 89620 241.29 1574 1580 364.9
D 13 189 285195 730.48 1598 1548 388.3
D 10 70 70956 178.75 1598 1548 388.3
D 2 234 49397 123.23 1598 1548 388.3

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