ASTROSAT CZTI

Data Quality Report

Orbit 37501

Creation date: 2024-06-27T21:40:49.902796
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/AS1A11_030T02_9000005328_37501cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37501cztM0_level2_quad_clean.evt
Size (bytes)2,051,694,720273,173,760
Size1.9 GB 260.5 MB
Events in quadrant A14,277,9111,657,507
Events in quadrant B14,655,3861,642,485
Events in quadrant C15,000,8811,602,223
Events in quadrant D16,395,3231,529,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05852112
B06081915
C0605018
D06680714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26774880.328677%
B267715111.908782%
C267754711.759104%
D267717322.734302%

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 44189 26783 45 45 0.10% 0.17%
B 44188 26780 355 355 0.80% 1.33%
C 44189 26782 406 406 0.92% 1.52%
D 44189 26780 676 676 1.53% 2.52%

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 1208391 1950.09 3094 3034 618.1
A 15 222 374325 600.7 3094 3034 618.1
A 9 143 221924 354.13 3094 3034 618.1
B 5 172 1584448 2696.82 3052 2969 586.4
B 15 35 359998 608.83 3052 2969 586.4
B 0 229 196265 329.62 3052 2969 586.4
C 14 254 1476455 2111.53 2985 3003 697.8
C 15 214 1125633 1608.78 2985 3003 697.8
C 14 128 252833 358.02 2985 3003 697.8
D 13 249 2146764 2926.91 2993 2912 732.5
D 2 249 603297 819.68 2993 2912 732.5
D 2 250 521120 707.49 2993 2912 732.5

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