ASTROSAT CZTI

Data Quality Report

Orbit 21468

Creation date: 2024-06-27T18:28:13.689256
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/AS1A06_005T09_9000003168_21468cztM0_level2.evt modeM0/AS1A06_005T09_9000003168_21468cztM0_level2_quad_clean.evt
Size (bytes)499,697,28092,808,000
Size476.5 MB 88.5 MB
Events in quadrant A3,344,609590,961
Events in quadrant B3,472,386604,266
Events in quadrant C3,354,652581,790
Events in quadrant D4,508,931568,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139213
B0141862
C0140212
D0178852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66691051.574449%
B66691352.024291%
C66691572.354176%
D66691732.594092%

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 7594 6669 0 0 0.00% 0.00%
B 7594 6669 2 2 0.03% 0.03%
C 7594 6669 0 0 0.00% 0.00%
D 7594 6669 51 51 0.67% 0.76%

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 13 254 8759 45.6 866 851 173.4
A 11 47 8557 44.44 866 851 173.4
A 0 226 7582 38.82 866 851 173.4
B 0 230 38637 228.81 862 839 165.2
B 3 64 30475 179.4 862 839 165.2
B 12 111 19739 114.41 862 839 165.2
C 14 238 131360 676.47 826 831 193.0
C 13 61 5793 25.72 826 831 193.0
C 4 175 2436 8.32 826 831 193.0
D 13 174 554737 2722.91 841 818 203.4
D 1 20 546161 2680.75 841 818 203.4
D 14 35 101139 493.15 841 818 203.4

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