ASTROSAT CZTI

Data Quality Report

Orbit 37519

Creation date: 2024-06-27T21:41:00.686428
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/AS1A09_061T01_9000005330_37519cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37519cztM0_level2_quad_clean.evt
Size (bytes)467,164,80072,103,680
Size445.5 MB 68.8 MB
Events in quadrant A2,888,612468,547
Events in quadrant B4,166,298448,384
Events in quadrant C3,041,834470,313
Events in quadrant D3,704,257437,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118653
B0158092
C0121342
D0145692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5112270.528169%
B511253710.504695%
C5112781.525822%
D51122354.597027%

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 7054 5113 8 8 0.11% 0.16%
B 7054 5113 460 460 6.52% 9.00%
C 7054 5113 64 64 0.91% 1.25%
D 7054 5113 210 210 2.98% 4.11%

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 313460 2422.71 628 618 129.1
A 9 143 102964 792.59 628 618 129.1
A 6 10 14973 111.17 628 618 129.1
B 5 172 1295101 11306.81 604 591 114.5
B 0 190 126318 1098.15 604 591 114.5
B 5 184 92013 798.52 604 591 114.5
C 15 214 219807 1507.78 620 625 145.4
C 14 254 214585 1471.85 620 625 145.4
C 0 10 112762 771.4 620 625 145.4
D 2 249 578931 3881.7 607 591 149.0
D 13 249 228231 1527.87 607 591 149.0
D 12 235 159061 1063.62 607 591 149.0

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