ASTROSAT CZTI

Data Quality Report

Orbit 22840

Creation date: 2024-06-27T18:46:28.712293
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/AS1C05_001T01_9000003374_22840cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22840cztM0_level2_quad_clean.evt
Size (bytes)487,442,880141,350,400
Size464.9 MB 134.8 MB
Events in quadrant A3,342,139979,713
Events in quadrant B3,530,498996,911
Events in quadrant C3,307,548955,560
Events in quadrant D4,167,335922,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136840
B0143600
C0137190
D0163190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6115671.095666%
B61151061.733442%
C61161292.109222%
D61161232.011118%

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 7400 6116 0 0 0.00% 0.00%
B 7400 6116 6 6 0.08% 0.10%
C 7401 6117 0 0 0.00% 0.00%
D 7401 6117 61 61 0.82% 1.00%

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 11 47 106960 646.63 837 824 164.1
A 13 254 10635 59.77 837 824 164.1
A 0 226 7340 39.7 837 824 164.1
B 0 190 191310 1264.14 832 814 150.7
B 5 172 26076 167.64 832 814 150.7
B 3 64 23886 153.11 832 814 150.7
C 14 238 131759 708.85 812 818 184.7
C 0 10 6237 29.34 812 818 184.7
C 13 61 5668 26.26 812 818 184.7
D 7 238 621888 3188.12 818 797 194.8
D 1 52 306482 1569.11 818 797 194.8
D 12 233 38163 191.8 818 797 194.8

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