ASTROSAT CZTI

Data Quality Report

Orbit 36504

Creation date: 2022-06-29T12:39:58.954354
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_049T05_9000005212_36504cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36504cztM0_level2_quad_clean.evt
Size (bytes)494,720,64063,328,320
Size471.8 MB 60.4 MB
Events in quadrant A2,835,694397,157
Events in quadrant B3,387,726392,324
Events in quadrant C3,059,158392,393
Events in quadrant D5,327,227350,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117623
B0135312
C0122562
D0195652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497240.436602%
B54971632.965254%
C54971352.455885%
D54975269.568856%

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 7260 5498 13 13 0.18% 0.24%
B 7260 5498 96 96 1.32% 1.75%
C 7260 5498 81 81 1.12% 1.47%
D 7260 5498 529 529 7.29% 9.62%

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 201354 1518.61 657 645 132.2
A 7 3 68074 510.18 657 645 132.2
A 9 143 11763 84.12 657 645 132.2
B 5 172 538342 4411.14 643 629 121.9
B 4 171 126629 1033.64 643 629 121.9
B 0 190 60964 494.96 643 629 121.9
C 0 10 366749 2518.98 628 633 145.3
C 15 214 235524 1616.12 628 633 145.3
C 14 67 5011 30.12 628 633 145.3
D 12 227 2392037 15929.13 620 602 150.1
D 13 249 214123 1422.24 620 602 150.1
D 2 250 88664 586.57 620 602 150.1

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