ASTROSAT CZTI

Data Quality Report

Orbit 06846

Creation date: 2024-06-27T15:12:20.149302
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/AS1A02_075T02_9000000940_06846cztM0_level2.evt modeM0/AS1A02_075T02_9000000940_06846cztM0_level2_quad_clean.evt
Size (bytes)165,856,32021,412,800
Size158.2 MB 20.4 MB
Events in quadrant A1,295,821122,331
Events in quadrant B1,218,218126,233
Events in quadrant C1,189,974124,691
Events in quadrant D1,172,136120,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052812
B049591
C048381
D047751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2129874.086426%
B2129874.086426%
C2129743.475810%
D2129813.804603%

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 3439 2130 2 2 0.06% 0.09%
B 3439 2130 1 1 0.03% 0.05%
C 3439 2130 0 0 0.00% 0.00%
D 3439 2130 0 0 0.00% 0.00%

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 8 15 124842 1992.13 301 296 62.5
A 15 239 5328 80.49 301 296 62.5
A 0 226 2906 41.75 301 296 62.5
B 0 228 19418 321.04 302 296 59.6
B 0 219 8254 133.61 302 296 59.6
B 0 214 6850 110.03 302 296 59.6
C 9 68 21112 298.74 297 298 69.7
C 9 247 4788 64.45 297 298 69.7
C 10 22 3625 47.75 297 298 69.7
D 8 195 25522 343.82 298 288 73.4
D 2 152 8308 109.27 298 288 73.4
D 5 81 5154 66.3 298 288 73.4

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