ASTROSAT CZTI

Data Quality Report

Orbit 10284

Creation date: 2024-06-27T15:57:25.312022
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/AS1A03_072T01_9000001484_10284cztM0_level2.evt modeM0/AS1A03_072T01_9000001484_10284cztM0_level2_quad_clean.evt
Size (bytes)173,491,20034,384,320
Size165.5 MB 32.8 MB
Events in quadrant A1,129,451224,527
Events in quadrant B1,289,829226,623
Events in quadrant C1,007,163221,234
Events in quadrant D1,675,742209,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047592
B052811
C045121
D064411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220470.317604%
B2204381.724138%
C220440.181488%
D2204492.223230%

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 2919 2205 2 2 0.07% 0.09%
B 2919 2205 25 25 0.86% 1.13%
C 2919 2205 2 2 0.07% 0.09%
D 2919 2205 34 34 1.16% 1.54%

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 37205 663.37 263 257 55.7
A 5 16 34604 616.67 263 257 55.7
A 3 1 25322 450.02 263 257 55.7
B 4 239 111949 2097.99 265 258 53.2
B 0 168 37458 698.76 265 258 53.2
B 10 245 29790 554.72 265 258 53.2
C 4 254 13896 224.97 252 254 60.6
C 12 4 4045 62.52 252 254 60.6
C 13 61 1946 27.9 252 254 60.6
D 2 16 324968 5161.0 251 243 62.9
D 8 195 176519 2801.63 251 243 62.9
D 7 71 113175 1794.88 251 243 62.9

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