ASTROSAT CZTI

Data Quality Report

Orbit 37828

Creation date: 2024-06-27T21:45:00.982290
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/AS1C07_001T12_9000005352_37828cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37828cztM0_level2_quad_clean.evt
Size (bytes)394,012,80079,770,240
Size375.8 MB 76.1 MB
Events in quadrant A2,723,597523,900
Events in quadrant B3,165,608519,767
Events in quadrant C2,683,818507,944
Events in quadrant D2,997,069490,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113763
B0128792
C0112842
D0125422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5333170.318770%
B53331342.512657%
C5333520.975061%
D5333941.762610%

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 7066 5334 9 9 0.13% 0.17%
B 7065 5332 122 122 1.73% 2.29%
C 7066 5333 41 41 0.58% 0.77%
D 7065 5332 84 84 1.19% 1.58%

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 362275 3009.17 594 582 120.2
A 12 189 22400 181.52 594 582 120.2
A 13 6 17894 144.03 594 582 120.2
B 5 172 291759 2599.54 586 571 112.0
B 4 171 232651 2071.86 586 571 112.0
B 0 229 126602 1125.13 586 571 112.0
C 15 214 224975 1659.38 579 583 135.2
C 0 10 167395 1233.58 579 583 135.2
C 14 254 21466 154.43 579 583 135.2
D 12 233 279871 1962.06 579 564 142.4
D 13 249 116588 815.04 579 564 142.4
D 2 249 98324 686.74 579 564 142.4

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