ASTROSAT CZTI

Data Quality Report

Orbit 25126

Creation date: 2024-06-27T19:14:13.053423
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/AS1A08_003T16_9000003676_25126cztM0_level2.evt modeM0/AS1A08_003T16_9000003676_25126cztM0_level2_quad_clean.evt
Size (bytes)589,170,24098,881,920
Size561.9 MB 94.3 MB
Events in quadrant A3,057,327681,579
Events in quadrant B3,143,439684,669
Events in quadrant C3,490,232647,202
Events in quadrant D7,745,980561,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129070
B0131060
C0142810
D0272620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5999601.000167%
B5999741.233539%
C59991111.850308%
D5999135422.570428%

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 7184 5999 0 0 0.00% 0.00%
B 7184 5999 7 7 0.10% 0.12%
C 7184 5999 0 0 0.00% 0.00%
D 7184 5999 1250 1250 17.40% 20.84%

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 13 254 9756 56.95 793 778 157.7
A 3 137 6871 38.65 793 778 157.7
A 0 226 6808 38.25 793 778 157.7
B 3 64 53083 353.39 779 761 148.1
B 12 111 17287 111.62 779 761 148.1
B 0 190 16986 109.59 779 761 148.1
C 7 247 402431 2266.43 755 762 177.2
C 14 238 121649 682.11 755 762 177.2
C 7 220 21172 115.16 755 762 177.2
D 1 52 4091530 23353.98 722 703 175.2
D 8 195 593550 3384.48 722 703 175.2
D 2 244 194038 1103.72 722 703 175.2

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