ASTROSAT CZTI

Data Quality Report

Orbit 28606

Creation date: 2024-06-27T19:53:57.267599
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_045T06_9000004108_28606cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28606cztM0_level2_quad_clean.evt
Size (bytes)505,848,96077,333,760
Size482.4 MB 73.8 MB
Events in quadrant A3,615,858471,329
Events in quadrant B3,337,083477,371
Events in quadrant C3,372,791464,270
Events in quadrant D4,534,788457,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149371
B0141021
C0140251
D0180862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67621572.321798%
B6762771.138716%
C67621131.671103%
D67621642.425318%

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 7222 6763 97 97 1.34% 1.43%
B 7222 6762 1 1 0.01% 0.01%
C 7222 6762 0 0 0.00% 0.00%
D 7222 6763 90 90 1.25% 1.33%

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 260835 1528.36 839 820 170.1
A 15 47 112859 658.56 839 820 170.1
A 13 254 12753 70.14 839 820 170.1
B 12 111 19795 118.95 837 815 159.6
B 11 111 17865 106.85 837 815 159.6
B 14 111 16065 95.57 837 815 159.6
C 14 238 131850 681.53 813 818 192.3
C 3 233 26260 132.33 813 818 192.3
C 7 247 19745 98.44 813 818 192.3
D 8 195 694866 3560.2 818 796 195.0
D 1 52 392729 2010.4 818 796 195.0
D 2 250 113228 576.71 818 796 195.0

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