ASTROSAT CZTI

Data Quality Report

Orbit 19700

Creation date: 2024-06-27T18:05:45.360598
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/AS1A05_013T01_9000002944_19700cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19700cztM0_level2_quad_clean.evt
Size (bytes)465,762,24088,297,920
Size444.2 MB 84.2 MB
Events in quadrant A3,229,646563,223
Events in quadrant B3,396,485585,548
Events in quadrant C3,440,750552,462
Events in quadrant D3,611,858533,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133492
B0137712
C0138812
D0146952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286310.493159%
B6286530.843143%
C6286721.145402%
D6286420.668151%

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 7666 6287 7 7 0.09% 0.11%
B 7666 6287 6 6 0.08% 0.10%
C 7666 6286 11 11 0.14% 0.17%
D 7666 6287 43 43 0.56% 0.68%

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 13 252 53398 320.44 817 805 164.1
A 5 16 26839 158.62 817 805 164.1
A 0 226 7085 38.26 817 805 164.1
B 0 189 96966 620.12 830 813 155.1
B 0 230 18748 115.67 830 813 155.1
B 12 111 17780 109.43 830 813 155.1
C 3 233 182943 985.69 801 811 184.8
C 14 238 127481 685.53 801 811 184.8
C 13 61 5701 26.46 801 811 184.8
D 2 16 497082 2596.54 798 777 191.1
D 1 52 67343 348.26 798 777 191.1
D 2 234 22670 114.54 798 777 191.1

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