ASTROSAT CZTI

Data Quality Report

Orbit 40755

Creation date: 2024-06-27T22:20:03.043308
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_068T02_9000005564_40755cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40755cztM0_level2_quad_clean.evt
Size (bytes)449,406,72090,532,800
Size428.6 MB 86.3 MB
Events in quadrant A3,044,672630,761
Events in quadrant B2,725,167652,469
Events in quadrant C7,155,253532,567
Events in quadrant D3,258,184518,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124323
B0120432
C0252512
D0137222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5812110.189264%
B581260.103235%
C5812110318.977977%
D581262310.719202%

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 7155 5813 3 3 0.04% 0.05%
B 7155 5813 0 0 0.00% 0.00%
C 7155 5813 1104 1104 15.43% 18.99%
D 7154 5812 89 89 1.24% 1.53%

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 508747 3837.88 642 630 132.4
A 6 10 31423 232.58 642 630 132.4
A 12 189 14523 104.94 642 630 132.4
B 0 229 144305 1141.31 639 619 125.9
B 4 81 23503 181.77 639 619 125.9
B 4 171 20804 160.33 639 619 125.9
C 9 187 4498713 32549.49 589 591 138.2
C 15 214 236324 1705.82 589 591 138.2
C 0 10 71331 511.89 589 591 138.2
D 2 249 438036 2936.4 595 576 149.0
D 2 250 165333 1105.91 595 576 149.0
D 12 191 162711 1088.31 595 576 149.0

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