ASTROSAT CZTI

Data Quality Report

Orbit 41996

Creation date: 2024-06-27T22:35:30.823540
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/AS1T05_132T01_9000005730_41996cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_41996cztM0_level2_quad_clean.evt
Size (bytes)346,847,04089,303,040
Size330.8 MB 85.2 MB
Events in quadrant A2,774,658603,074
Events in quadrant B2,335,228624,491
Events in quadrant C2,386,869597,456
Events in quadrant D4,948,284524,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112562
B0103562
C0101722
D0184304

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5065110.217177%
B5065140.276407%
C506530.059230%
D50642094.127172%

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 7157 5066 4 4 0.06% 0.08%
B 7157 5066 2 2 0.03% 0.04%
C 7157 5066 0 0 0.00% 0.00%
D 7156 5065 150 150 2.10% 2.96%

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 521832 4465.73 570 560 116.7
A 2 79 39775 335.95 570 560 116.7
A 3 137 6054 47.06 570 560 116.7
B 0 190 35943 329.54 569 554 107.4
B 5 255 33776 309.36 569 554 107.4
B 12 111 13483 120.39 569 554 107.4
C 15 214 211088 1630.14 555 558 129.1
C 8 229 7875 56.66 555 558 129.1
C 7 220 4381 29.6 555 558 129.1
D 1 52 1992144 15179.48 537 522 131.2
D 13 249 361467 2751.0 537 522 131.2
D 12 217 210850 1603.05 537 522 131.2

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