ASTROSAT CZTI

Data Quality Report

Orbit 20167

Creation date: 2024-06-27T18:12:01.270922
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/AS1C04_001T01_9000002994_20167cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20167cztM0_level2_quad_clean.evt
Size (bytes)208,693,44039,732,480
Size199.0 MB 37.9 MB
Events in quadrant A1,260,001274,925
Events in quadrant B1,212,646276,841
Events in quadrant C1,466,289259,170
Events in quadrant D2,227,263229,996

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050761
B049561
C058761
D081141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2248853.781139%
B2248954.225979%
C22481356.005338%
D224848421.530249%

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 2563 2249 11 11 0.43% 0.49%
B 2563 2249 2 2 0.08% 0.09%
C 2563 2249 0 0 0.00% 0.00%
D 2563 2248 265 265 10.34% 11.79%

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 76360 1214.76 302 295 62.6
A 10 253 7453 114.31 302 295 62.6
A 11 29 5564 84.15 302 295 62.6
B 3 64 13090 214.6 297 288 59.7
B 0 190 12532 205.25 297 288 59.7
B 12 111 6822 109.53 297 288 59.7
C 3 233 301997 4439.02 286 285 68.0
C 14 238 43372 633.93 286 285 68.0
C 8 128 3324 44.71 286 285 68.0
D 12 218 634550 9301.35 274 264 68.2
D 7 38 191873 2809.81 274 264 68.2
D 1 52 156868 2296.48 274 264 68.2

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