ASTROSAT CZTI

Data Quality Report

Orbit 26571

Creation date: 2024-06-27T19:30:35.142089
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/AS1A09_095T02_9000003846_26571cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26571cztM0_level2_quad_clean.evt
Size (bytes)1,080,057,600149,564,160
Size1.0 GB 142.6 MB
Events in quadrant A4,834,8711,006,323
Events in quadrant B5,322,2181,024,950
Events in quadrant C7,479,581959,724
Events in quadrant D14,383,646829,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208320
B0224730
C0287490
D0498430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10219540.528427%
B102192001.957139%
C102189068.866706%
D10218298029.164220%

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 11414 10220 0 0 0.00% 0.00%
B 11414 10220 61 61 0.53% 0.60%
C 11413 10219 561 561 4.92% 5.49%
D 11413 10218 2663 2663 23.33% 26.06%

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 6 16 84353 340.72 1207 1181 244.1
A 5 168 71040 286.18 1207 1181 244.1
A 13 254 17552 67.06 1207 1181 244.1
B 5 172 263492 1147.0 1195 1161 228.7
B 0 245 248826 1082.88 1195 1161 228.7
B 3 112 84526 364.5 1195 1161 228.7
C 4 254 2686847 10158.14 1130 1138 264.4
C 14 238 178492 670.81 1130 1138 264.4
C 3 233 161388 606.11 1130 1138 264.4
D 7 80 7714019 30721.29 1038 1005 251.1
D 1 52 2370341 9437.17 1038 1005 251.1
D 2 250 249250 988.77 1038 1005 251.1

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