ASTROSAT CZTI

Data Quality Report

Orbit 33530

Creation date: 2024-06-27T20:49:49.992434
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/AS1A11_060T01_9000004808_33530cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33530cztM0_level2_quad_clean.evt
Size (bytes)153,956,16016,444,800
Size146.8 MB 15.7 MB
Events in quadrant A790,79595,450
Events in quadrant B985,52096,012
Events in quadrant C1,031,94495,025
Events in quadrant D1,740,24289,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033211
B038980
C039850
D063520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164750.303582%
B1647281.700061%
C1647472.853673%
D16471146.921676%

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 2959 1648 0 0 0.00% 0.00%
B 2959 1648 17 17 0.57% 1.03%
C 2959 1648 32 32 1.08% 1.94%
D 2959 1648 78 78 2.64% 4.73%

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 2964 64.39 203 198 43.0
A 10 83 2573 55.29 203 198 43.0
A 15 169 2309 49.14 203 198 43.0
B 5 172 107859 2556.97 202 196 42.1
B 0 213 39906 943.1 202 196 42.1
B 5 255 18572 436.42 202 196 42.1
C 0 10 129221 2678.73 200 201 48.2
C 15 214 78488 1625.41 200 201 48.2
C 3 233 21556 443.38 200 201 48.2
D 8 195 544171 10291.11 195 190 52.9
D 13 249 123262 2328.29 195 190 52.9
D 2 249 87088 1643.95 195 190 52.9

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