ASTROSAT CZTI

Data Quality Report

Orbit 20674

Creation date: 2024-06-27T18:18:14.313095
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_229T02_9000003060_20674cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20674cztM0_level2_quad_clean.evt
Size (bytes)734,296,320141,992,640
Size700.3 MB 135.4 MB
Events in quadrant A5,201,877912,352
Events in quadrant B5,154,392921,155
Events in quadrant C5,223,149883,084
Events in quadrant D5,947,925856,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255673115
B0253603087
C0255753097
D0286883645

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024430
B024428
C024432
D024432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10498900.857306%
B105051040.990005%
C104991131.076293%
D104982662.533816%

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 12959 10623 30 30 0.23% 0.28%
B 12959 10626 15 15 0.12% 0.14%
C 12960 10616 0 0 0.00% 0.00%
D 12959 10616 154 154 1.19% 1.45%

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 9 143 226432 881.69 1264 1235 255.4
A 5 16 110455 427.62 1264 1235 255.4
A 0 226 10737 37.2 1264 1235 255.4
B 7 220 128795 529.74 1263 1230 240.8
B 12 111 29116 115.8 1263 1230 240.8
B 0 190 27074 107.32 1263 1230 240.8
C 3 233 230369 811.71 1208 1216 282.3
C 14 238 187469 659.75 1208 1216 282.3
C 8 208 68261 237.49 1208 1216 282.3
D 1 52 867547 2978.32 1212 1175 290.9
D 13 153 217983 745.32 1212 1175 290.9
D 12 227 79031 267.65 1212 1175 290.9

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