ASTROSAT CZTI

Data Quality Report

Orbit 21819

Creation date: 2024-06-27T18:32:38.657519
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/AS1A07_004T01_9000003230_21819cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21819cztM0_level2_quad_clean.evt
Size (bytes)571,944,96094,665,600
Size545.4 MB 90.3 MB
Events in quadrant A4,419,719570,617
Events in quadrant B4,211,942588,741
Events in quadrant C4,069,582570,172
Events in quadrant D4,048,661552,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185842
B0177262
C0174322
D0178152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84143594.266698%
B84152973.529412%
C84153123.707665%
D84152332.768865%

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 8989 8414 69 69 0.77% 0.82%
B 8990 8417 2 2 0.02% 0.02%
C 8990 8416 0 0 0.00% 0.00%
D 8990 8417 12 12 0.13% 0.14%

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 4 2 383728 1835.18 1034 1008 208.5
A 5 16 32764 152.27 1034 1008 208.5
A 13 254 15717 70.53 1034 1008 208.5
B 3 64 33896 164.25 1038 1011 200.2
B 0 245 30317 146.37 1038 1011 200.2
B 0 197 29802 143.8 1038 1011 200.2
C 14 238 155428 652.07 1003 1008 236.8
C 13 61 6988 25.25 1003 1008 236.8
C 10 91 3677 11.27 1003 1008 236.8
D 13 172 57292 226.57 1014 983 248.5
D 13 104 50584 199.58 1014 983 248.5
D 2 234 37053 145.14 1014 983 248.5

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