ASTROSAT CZTI

Data Quality Report

Orbit 24463

Creation date: 2024-06-27T19:06:15.420552
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/AS1T03_183T01_9000003606_24463cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24463cztM0_level2_quad_clean.evt
Size (bytes)618,652,800111,948,480
Size590.0 MB 106.8 MB
Events in quadrant A3,032,579793,086
Events in quadrant B4,778,725745,213
Events in quadrant C5,445,310716,852
Events in quadrant D5,056,301698,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130262
B0181793
C0202452
D0192512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6250330.528000%
B624974811.969915%
C624978112.498000%
D62495198.305329%

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 7560 6251 0 0 0.00% 0.00%
B 7559 6250 527 527 6.97% 8.43%
C 7559 6250 489 489 6.47% 7.82%
D 7559 6250 396 396 5.24% 6.34%

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 9152 53.4 785 770 157.0
A 3 137 6813 38.5 785 770 157.0
A 0 226 6719 37.9 785 770 157.0
B 3 64 1796907 13219.93 731 715 135.9
B 5 172 63103 459.17 731 715 135.9
B 6 36 41267 298.46 731 715 135.9
C 2 16 2483718 14986.98 721 726 165.7
C 14 238 117067 702.22 721 726 165.7
C 10 9 27258 160.14 721 726 165.7
D 12 218 1343909 7716.03 724 703 174.1
D 1 52 844591 4847.7 724 703 174.1
D 9 1 31996 179.76 724 703 174.1

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