ASTROSAT CZTI

Data Quality Report

Orbit 39464

Creation date: 2024-06-27T22:04:52.059270
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_044T16_9000005478_39464cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39464cztM0_level2_quad_clean.evt
Size (bytes)428,495,04088,750,080
Size408.6 MB 84.6 MB
Events in quadrant A5,366,447581,376
Events in quadrant B2,744,459611,960
Events in quadrant C3,889,953580,688
Events in quadrant D3,441,761535,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198342
B0117651
C0149901
D0138591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53933266.044873%
B53931132.095309%
C53931502.781383%
D53931412.614500%

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 9338 5395 241 241 2.58% 4.47%
B 9338 5395 86 86 0.92% 1.59%
C 9338 5395 126 126 1.35% 2.34%
D 9338 5395 127 127 1.36% 2.35%

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 15 222 2432872 20102.66 594 581 121.0
A 10 83 437895 3614.36 594 581 121.0
A 15 174 156456 1288.29 594 581 121.0
B 5 172 266674 2276.45 596 579 116.9
B 8 3 107837 917.59 596 579 116.9
B 12 111 14959 123.02 596 579 116.9
C 9 187 967601 7090.89 583 588 136.4
C 15 208 409500 2998.46 583 588 136.4
C 15 214 229397 1677.81 583 588 136.4
D 13 249 365429 2533.51 583 567 144.0
D 2 249 285473 1978.31 583 567 144.0
D 12 227 182052 1260.18 583 567 144.0

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