ASTROSAT CZTI

Data Quality Report

Orbit 15026

Creation date: 2024-06-27T17:02:42.704968
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/AS1T02_057T01_9000002212_15026cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15026cztM0_level2_quad_clean.evt
Size (bytes)754,827,840147,726,720
Size719.9 MB 140.9 MB
Events in quadrant A5,888,446952,314
Events in quadrant B6,113,429956,953
Events in quadrant C5,081,662939,883
Events in quadrant D5,069,162901,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242903
B0248094
C0216092
D0223112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104471911.828276%
B104463683.522880%
C10447800.765770%
D104471421.359242%

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 12728 10449 3 3 0.02% 0.03%
B 12728 10449 125 125 0.98% 1.20%
C 12728 10450 1 1 0.01% 0.01%
D 12728 10450 47 47 0.37% 0.45%

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 1 162 349347 1367.96 1269 1243 254.5
A 1 178 188484 735.81 1269 1243 254.5
A 1 161 162806 634.9 1269 1243 254.5
B 10 16 454056 1931.14 1255 1223 234.5
B 3 64 370637 1575.39 1255 1223 234.5
B 0 229 272076 1155.07 1255 1223 234.5
C 3 233 314488 1130.49 1214 1217 277.1
C 10 22 30987 107.43 1214 1217 277.1
C 13 61 8719 27.07 1214 1217 277.1
D 10 70 206530 701.38 1218 1182 292.8
D 13 249 83111 279.83 1218 1182 292.8
D 8 195 66198 222.07 1218 1182 292.8

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