ASTROSAT CZTI

Data Quality Report

Orbit 04619

Creation date: 2024-06-27T14:44:38.318677
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/AS1G05_154T01_9000000576_04619cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04619cztM0_level2_quad_clean.evt
Size (bytes)637,597,44060,946,560
Size608.1 MB 58.1 MB
Events in quadrant A3,420,888349,299
Events in quadrant B3,711,767351,903
Events in quadrant C3,137,814354,657
Events in quadrant D8,577,521314,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147573
B0153662
C0139822
D0300682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68091021.498017%
B68091201.762373%
C6809410.602144%
D6809222532.677339%

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 7839 6810 33 33 0.42% 0.48%
B 7839 6810 55 55 0.70% 0.81%
C 7839 6810 0 0 0.00% 0.00%
D 7839 6810 2106 2106 26.87% 30.93%

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 8 15 127161 757.09 805 789 166.9
A 12 133 89893 533.82 805 789 166.9
A 0 118 56304 332.59 805 789 166.9
B 10 16 358412 2251.5 820 801 158.8
B 14 167 55729 345.82 820 801 158.8
B 4 48 30641 187.87 820 801 158.8
C 14 48 38674 204.69 789 792 185.1
C 9 54 11800 59.48 789 792 185.1
C 13 61 6508 30.89 789 792 185.1
D 13 235 5779127 38705.67 612 592 149.3
D 13 25 235582 1574.01 612 592 149.3
D 2 136 160853 1073.46 612 592 149.3

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