ASTROSAT CZTI

Data Quality Report

Orbit 37120

Creation date: 2024-06-27T21:35:49.293261
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/AS1A09_138T04_9000005282_37120cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37120cztM0_level2_quad_clean.evt
Size (bytes)443,989,44079,885,440
Size423.4 MB 76.2 MB
Events in quadrant A3,198,880506,236
Events in quadrant B3,453,189513,360
Events in quadrant C3,419,728500,745
Events in quadrant D2,975,869488,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132663
B0140892
C0137592
D0129132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58611462.491042%
B58611913.258830%
C58611702.900529%
D5861651.109026%

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 7204 5862 82 82 1.14% 1.40%
B 7204 5862 135 135 1.87% 2.30%
C 7204 5862 143 143 1.99% 2.44%
D 7204 5862 54 54 0.75% 0.92%

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 10 83 271848 2039.32 656 643 133.0
A 15 237 260308 1952.54 656 643 133.0
A 9 143 95317 711.9 656 643 133.0
B 5 172 543958 4268.26 658 639 127.3
B 5 184 168172 1316.12 658 639 127.3
B 5 200 69113 537.93 658 639 127.3
C 0 10 497643 3317.67 642 647 149.8
C 15 214 245033 1631.38 642 647 149.8
C 14 254 138050 917.23 642 647 149.8
D 13 249 125646 780.64 649 631 160.1
D 13 171 110208 684.24 649 631 160.1
D 12 233 55364 341.77 649 631 160.1

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