ASTROSAT CZTI

Data Quality Report

Orbit 27085

Creation date: 2024-06-27T19:36:19.162034
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_236T01_9000003908_27085cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27085cztM0_level2_quad_clean.evt
Size (bytes)516,516,48076,530,240
Size492.6 MB 73.0 MB
Events in quadrant A4,040,795460,719
Events in quadrant B3,421,151493,572
Events in quadrant C3,088,405484,707
Events in quadrant D4,683,348456,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158340
B0140350
C0129700
D0181410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60272644.380289%
B60281552.571334%
C60281282.123424%
D60284086.768414%

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 8037 6029 179 179 2.23% 2.97%
B 8038 6030 3 3 0.04% 0.05%
C 8038 6030 1 1 0.01% 0.02%
D 8038 6030 312 312 3.88% 5.17%

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 14 235 1041376 6787.5 763 746 153.3
A 12 189 51316 329.84 763 746 153.3
A 13 254 9887 59.62 763 746 153.3
B 0 189 239638 1615.77 771 752 147.8
B 3 112 104120 699.16 771 752 147.8
B 7 205 25850 169.76 771 752 147.8
C 14 238 119453 669.37 751 757 177.3
C 15 208 28212 154.83 751 757 177.3
C 2 16 5943 29.25 751 757 177.3
D 1 52 1739009 9875.86 735 715 176.0
D 2 250 139292 787.3 735 715 176.0
D 2 234 23731 130.76 735 715 176.0

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