ASTROSAT CZTI

Data Quality Report

Orbit 31025

Creation date: 2024-06-27T20:22:26.592249
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/AS1A10_071T54_9000004482_31025cztM0_level2.evt modeM0/AS1A10_071T54_9000004482_31025cztM0_level2_quad_clean.evt
Size (bytes)645,266,88077,307,840
Size615.4 MB 73.7 MB
Events in quadrant A3,697,768466,785
Events in quadrant B5,961,805465,655
Events in quadrant C3,794,718448,291
Events in quadrant D5,574,623432,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158030
B0232720
C0158680
D0216500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75762903.827878%
B75773865.094365%
C75762943.880676%
D75763865.095037%

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 7576 7576 0 0 0.00% 0.00%
B 7577 7577 11 11 0.15% 0.15%
C 7576 7576 0 0 0.00% 0.00%
D 7576 7576 137 137 1.81% 1.81%

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 15 174 15492 74.96 953 930 194.3
A 13 254 14618 70.46 953 930 194.3
A 3 137 10128 47.35 953 930 194.3
B 6 159 2129870 11532.26 935 908 184.6
B 4 52 52260 278.16 935 908 184.6
B 0 183 38417 203.18 935 908 184.6
C 14 238 145774 668.55 913 919 216.7
C 0 10 51750 234.6 913 919 216.7
C 2 114 17793 77.88 913 919 216.7
D 13 174 1074251 4830.43 916 888 222.2
D 8 195 492631 2212.98 916 888 222.2
D 12 4 291238 1306.66 916 888 222.2

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