ASTROSAT CZTI

Data Quality Report

Orbit 38582

Creation date: 2024-06-27T21:53:45.301448
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/AS1A12_018T01_9000005386_38582cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38582cztM0_level2_quad_clean.evt
Size (bytes)393,370,56091,189,440
Size375.1 MB 87.0 MB
Events in quadrant A2,889,757635,642
Events in quadrant B3,039,249642,943
Events in quadrant C2,738,977603,448
Events in quadrant D5,459,565489,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119962
B0126841
C0115751
D0200711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5573120.215324%
B5573591.058676%
C5573140.251211%
D557387215.646869%

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 6976 5574 8 8 0.11% 0.14%
B 6976 5574 44 44 0.63% 0.79%
C 6976 5574 8 8 0.11% 0.14%
D 6976 5574 751 751 10.77% 13.47%

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 10 83 386074 3080.4 619 607 125.1
A 9 143 58888 465.74 619 607 125.1
A 6 10 24718 192.68 619 607 125.1
B 5 184 435871 3683.61 613 597 118.2
B 0 189 71227 597.72 613 597 118.2
B 0 183 70337 590.19 613 597 118.2
C 15 214 227881 1605.12 601 605 141.6
C 14 254 105658 741.93 601 605 141.6
C 3 233 33326 231.09 601 605 141.6
D 12 227 1140241 8310.83 560 543 137.1
D 10 118 638495 4652.03 560 543 137.1
D 12 235 594419 4330.62 560 543 137.1

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