ASTROSAT CZTI

Data Quality Report

Orbit 17904

Creation date: 2024-06-27T17:42:28.104374
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_011T01_9000002664_17904cztM0_level2.evt modeM0/AS1C04_011T01_9000002664_17904cztM0_level2_quad_clean.evt
Size (bytes)232,836,48054,296,640
Size222.1 MB 51.8 MB
Events in quadrant A1,298,997377,020
Events in quadrant B1,431,936389,591
Events in quadrant C1,337,459375,310
Events in quadrant D2,810,521321,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054551
B058881
C056291
D0101171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2513471.870275%
B2513642.546757%
C2513783.103860%
D251256222.372611%

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 3823 2514 0 0 0.00% 0.00%
B 3823 2514 8 8 0.21% 0.32%
C 3823 2514 0 0 0.00% 0.00%
D 3822 2512 425 425 11.12% 16.92%

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 0 226 2883 37.28 337 329 68.5
A 12 194 2561 32.58 337 329 68.5
A 3 137 2431 30.68 337 329 68.5
B 0 189 48033 745.99 339 330 63.9
B 7 220 17041 261.33 339 330 63.9
B 0 219 13893 212.1 339 330 63.9
C 14 238 51505 670.68 327 330 76.3
C 3 233 5917 73.22 327 330 76.3
C 5 218 3851 46.14 327 330 76.3
D 12 110 1470527 20223.27 297 289 72.7
D 5 222 115908 1590.35 297 289 72.7
D 7 223 37475 511.5 297 289 72.7

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