ASTROSAT CZTI

Data Quality Report

Orbit 20210603_A10_071T11_9000004436_level2

Creation date: 2021-06-05T16:01:22.352553
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/AS1A10_071T11_9000004436cztM0_level2_bc.evt modeM0/AS1A10_071T11_9000004436cztM0_level2_quad_clean.evt
Size (bytes)4,584,680,6401,028,885,760
Size4.3 GB 981.2 MB
Events in quadrant A19,631,8636,695,828
Events in quadrant B40,636,1816,667,537
Events in quadrant C18,956,4336,351,134
Events in quadrant D54,204,3165,968,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01758860
B02475050
C01768810
D02861830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7992915801.976754%
B7992922122.767456%
C7992918282.287030%
D7992950116.269314%

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 92659 79919 30 30 0.03% 0.04%
B 92659 79914 38 38 0.04% 0.05%
C 92659 79916 4 4 0.00% 0.01%
D 92659 79919 1403 1403 1.51% 1.76%

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 1793057 1857.15 4534 4471 963.1
A 8 192 305576 312.65 4534 4471 963.1
A 13 254 138856 139.54 4534 4471 963.1
B 6 159 21660348 25471.87 4529 4435 850.2
B 5 172 435348 506.84 4529 4435 850.2
B 5 255 375397 436.33 4529 4435 850.2
C 3 233 1889781 1900.61 4272 4261 992.1
C 2 114 152828 149.76 4272 4261 992.1
C 10 22 128449 125.18 4272 4261 992.1
D 8 195 29958760 29302.64 4289 4165 1022.2
D 10 253 4377057 4277.72 4289 4165 1022.2
D 13 249 1312169 1279.54 4289 4165 1022.2

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