ASTROSAT CZTI

Data Quality Report

Orbit 19987

Creation date: 2024-06-27T18:09:43.396450
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/AS1A06_002T02_9000002982_19987cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19987cztM0_level2_quad_clean.evt
Size (bytes)136,961,28012,038,400
Size130.6 MB 11.5 MB
Events in quadrant A1,363,11463,330
Events in quadrant B885,25667,884
Events in quadrant C930,84963,424
Events in quadrant D870,03763,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051011
B036431
C037411
D035271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141522615.971731%
B1415332.332155%
C1415513.604240%
D1415271.908127%

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 1415 1415 149 149 10.53% 10.53%
B 1415 1415 0 0 0.00% 0.00%
C 1415 1415 6 6 0.42% 0.42%
D 1415 1415 0 0 0.00% 0.00%

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 14 238 504211 11620.51 211 208 43.4
A 14 254 33321 763.47 211 208 43.4
A 13 252 11018 249.24 211 208 43.4
B 7 220 11722 271.45 219 215 42.4
B 0 198 7542 172.84 219 215 42.4
B 4 216 5078 114.72 219 215 42.4
C 0 207 74431 1511.93 208 210 49.1
C 14 238 33741 683.05 208 210 49.1
C 3 233 8431 167.47 208 210 49.1
D 1 52 29361 548.61 218 211 53.1
D 7 96 8959 164.64 218 211 53.1
D 13 104 5094 91.9 218 211 53.1

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