ASTROSAT CZTI

Data Quality Report

Orbit 12298

Creation date: 2024-06-27T16:25:06.970509
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/AS1A04_183T02_9000001816_12298cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12298cztM0_level2_quad_clean.evt
Size (bytes)523,537,92082,111,680
Size499.3 MB 78.3 MB
Events in quadrant A4,420,496493,744
Events in quadrant B3,902,624510,120
Events in quadrant C3,365,210514,792
Events in quadrant D3,704,587492,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175903
B0160382
C0146442
D0154562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68244045.920281%
B68241782.608441%
C6824731.069754%
D6824440.644783%

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 7850 6826 335 335 4.27% 4.91%
B 7850 6826 109 109 1.39% 1.60%
C 7850 6826 40 40 0.51% 0.59%
D 7850 6826 39 39 0.50% 0.57%

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 0 23 970362 6012.84 785 769 161.3
A 1 162 133699 824.35 785 769 161.3
A 1 178 72214 443.06 785 769 161.3
B 4 239 557961 3655.79 793 773 152.4
B 11 51 43782 282.19 793 773 152.4
B 0 85 42748 275.4 793 773 152.4
C 4 254 142207 780.88 780 785 181.1
C 14 234 119308 654.44 780 785 181.1
C 15 208 63354 345.48 780 785 181.1
D 1 52 244479 1301.48 774 751 187.3
D 11 129 119287 632.97 774 751 187.3
D 2 14 82171 434.77 774 751 187.3

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