ASTROSAT CZTI

Data Quality Report

Orbit 22682

Creation date: 2024-06-27T18:44:24.066684
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/AS1A08_007T01_9000003362_22682cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22682cztM0_level2_quad_clean.evt
Size (bytes)587,612,16089,444,160
Size560.4 MB 85.3 MB
Events in quadrant A3,604,299587,428
Events in quadrant B3,891,856589,324
Events in quadrant C3,565,422550,923
Events in quadrant D6,293,157526,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147902
B0159443
C0146262
D0235052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65211051.610182%
B65201201.840491%
C65201542.361963%
D65203956.058282%

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 7856 6522 0 0 0.00% 0.00%
B 7855 6521 5 5 0.06% 0.08%
C 7855 6521 1 1 0.01% 0.02%
D 7855 6521 231 231 2.94% 3.54%

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 12267 62.6 932 918 181.3
A 0 226 8372 41.12 932 918 181.3
A 14 250 6813 32.52 932 918 181.3
B 0 219 100753 600.0 917 900 166.4
B 0 230 81028 481.48 917 900 166.4
B 0 228 49054 289.35 917 900 166.4
C 14 238 142647 713.71 873 883 198.6
C 10 22 7141 31.51 873 883 198.6
C 2 16 7080 31.2 873 883 198.6
D 12 235 970006 4573.93 882 858 211.9
D 1 52 957367 4514.28 882 858 211.9
D 12 227 393430 1852.76 882 858 211.9

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