ASTROSAT CZTI

Data Quality Report

Orbit 17276

Creation date: 2024-06-27T17:34:23.833881
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/AS1T03_059T01_9000002554_17276cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17276cztM0_level2_quad_clean.evt
Size (bytes)1,358,297,280223,295,040
Size1.3 GB 213.0 MB
Events in quadrant A10,354,8951,379,462
Events in quadrant B9,027,5091,400,252
Events in quadrant C8,927,7031,337,563
Events in quadrant D11,523,5051,317,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438034
B0397164
C0395814
D0476994

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192636353.296475%
B192633311.718320%
C192634042.097285%
D192635692.953849%

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 21378 19267 275 275 1.29% 1.43%
B 21378 19267 2 2 0.01% 0.01%
C 21378 19267 0 0 0.00% 0.00%
D 21378 19267 276 276 1.29% 1.43%

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 14 235 1572245 3424.93 2281 2232 458.4
A 0 226 20570 40.0 2281 2232 458.4
A 3 137 17873 34.12 2281 2232 458.4
B 12 111 55399 119.98 2292 2228 443.2
B 11 111 48105 103.52 2292 2228 443.2
B 0 230 45769 98.25 2292 2228 443.2
C 14 238 335666 645.15 2200 2212 516.9
C 3 233 17300 29.19 2200 2212 516.9
C 13 61 15243 25.21 2200 2212 516.9
D 11 176 1396896 2603.21 2218 2152 535.8
D 11 66 505722 939.89 2218 2152 535.8
D 13 168 305299 565.81 2218 2152 535.8

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