ASTROSAT CZTI

Data Quality Report

Orbit 01320

Creation date: 2024-06-27T14:10:55.939002
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/AS1G04_002T02_9000000230_01320cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01320cztM0_level2_quad_clean.evt
Size (bytes)777,692,16062,694,720
Size741.7 MB 59.8 MB
Events in quadrant A7,669,450389,949
Events in quadrant B5,723,515412,433
Events in quadrant C5,086,281397,877
Events in quadrant D4,785,467392,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258650
B0200300
C0181980
D0173520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43324189.649123%
B4332501.154201%
C4332511.177285%
D4332601.385042%

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 4332 4332 1429 1429 32.99% 32.99%
B 4332 4332 329 329 7.59% 7.59%
C 4332 4332 156 156 3.60% 3.60%
D 4332 4332 159 159 3.67% 3.67%

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 32 2839335 9721.12 1219 1226 292.0
A 0 128 123623 419.24 1219 1226 292.0
A 13 169 9169 27.21 1219 1226 292.0
B 8 4 573465 1888.77 1284 1289 302.9
B 0 220 98354 320.41 1284 1289 302.9
B 12 52 76749 249.1 1284 1289 302.9
C 15 241 219913 683.13 1159 1197 320.2
C 9 52 218958 680.14 1159 1197 320.2
C 8 208 33751 101.68 1159 1197 320.2
D 10 84 421530 1196.2 1140 1177 351.4
D 1 83 54586 151.98 1140 1177 351.4
D 13 73 21247 57.11 1140 1177 351.4

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