ASTROSAT CZTI

Data Quality Report

Orbit 17831

Creation date: 2024-06-27T17:41:31.424741
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/AS1A05_025T04_9000002652_17831cztM0_level2.evt modeM0/AS1A05_025T04_9000002652_17831cztM0_level2_quad_clean.evt
Size (bytes)158,869,44031,207,680
Size151.5 MB 29.8 MB
Events in quadrant A1,126,996200,219
Events in quadrant B1,227,181207,328
Events in quadrant C1,152,656196,729
Events in quadrant D1,160,168188,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045772
B049161
C046361
D046891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2088170.814176%
B2088281.340996%
C2088391.867816%
D2088301.436782%

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 3413 2089 0 0 0.00% 0.00%
B 3413 2089 3 3 0.09% 0.14%
C 3413 2089 0 0 0.00% 0.00%
D 3413 2089 5 5 0.15% 0.24%

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 15 174 3074 46.53 292 286 59.9
A 0 226 2561 37.97 292 286 59.9
A 3 137 2204 32.01 292 286 59.9
B 0 189 18395 314.54 296 290 57.6
B 4 171 16390 279.71 296 290 57.6
B 10 245 16082 274.36 296 290 57.6
C 14 238 44313 660.92 281 283 66.6
C 5 218 10437 152.42 281 283 66.6
C 13 61 1925 24.65 281 283 66.6
D 10 70 57753 798.52 280 273 72.0
D 7 238 19217 263.17 280 273 72.0
D 2 234 7801 104.57 280 273 72.0

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