ASTROSAT CZTI

Data Quality Report

Orbit 20220412_A11_037T01_9000005066_level2

Creation date: 2022-04-23T18:14:28.515513
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_037T01_9000005066cztM0_level2_bc.evt modeM0/AS1A11_037T01_9000005066cztM0_level2_quad_clean.evt
Size (bytes)630,849,600164,041,920
Size601.6 MB 156.4 MB
Events in quadrant A2,648,3721,083,651
Events in quadrant B3,713,7871,074,709
Events in quadrant C4,234,7461,037,874
Events in quadrant D7,669,368925,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250880
B0297120
C0305680
D0436270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12239180.147071%
B122392972.426669%
C122393522.876052%
D12239144311.790179%

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 16295 12241 0 0 0.00% 0.00%
B 16295 12239 25 25 0.15% 0.20%
C 16295 12239 34 34 0.21% 0.28%
D 16295 12239 348 348 2.14% 2.84%

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 207292 1500.72 604 593 137.7
A 7 3 31844 226.9 604 593 137.7
A 15 169 25312 179.47 604 593 137.7
B 5 172 660258 5362.45 599 586 123.0
B 4 251 349510 2836.39 599 586 123.0
B 5 236 227397 1843.74 599 586 123.0
C 0 10 653489 4832.68 575 569 135.1
C 15 208 599980 4436.63 575 569 135.1
C 15 214 471257 3483.87 575 569 135.1
D 7 80 3319452 24600.52 554 536 134.9
D 8 195 1032064 7645.91 554 536 134.9
D 2 152 344872 2552.29 554 536 134.9

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