ASTROSAT CZTI

Data Quality Report

Orbit 25661

Creation date: 2024-06-27T19:20:08.132692
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_006T05_9000003736_25661cztM0_level2.evt modeM0/AS1A09_006T05_9000003736_25661cztM0_level2_quad_clean.evt
Size (bytes)116,320,32031,184,640
Size110.9 MB 29.7 MB
Events in quadrant A836,335216,122
Events in quadrant B796,401220,213
Events in quadrant C757,362204,567
Events in quadrant D1,033,190197,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033880
B032530
C031210
D040100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1423332.319044%
B1424382.668539%
C1424322.247191%
D1424503.511236%

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 2478 1423 0 0 0.00% 0.00%
B 2479 1425 1 1 0.04% 0.07%
C 2479 1425 0 0 0.00% 0.00%
D 2479 1425 22 22 0.89% 1.54%

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 8 192 63836 1541.25 200 196 41.3
A 13 254 2309 51.17 200 196 41.3
A 0 226 1742 37.44 200 196 41.3
B 0 245 6124 148.04 198 194 40.1
B 0 190 4401 105.03 198 194 40.1
B 12 111 4392 104.8 198 194 40.1
C 14 238 29515 654.43 185 185 44.8
C 3 233 5387 116.07 185 185 44.8
C 13 61 1301 24.9 185 185 44.8
D 1 52 266045 5690.23 188 183 46.7
D 8 195 34303 730.27 188 183 46.7
D 7 238 8800 184.43 188 183 46.7

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