ASTROSAT CZTI

Data Quality Report

Orbit 13557

Creation date: 2024-06-27T16:42:35.484363
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/AS1G08_032T01_9000001998_13557cztM0_level2.evt modeM0/AS1G08_032T01_9000001998_13557cztM0_level2_quad_clean.evt
Size (bytes)768,905,280154,860,480
Size733.3 MB 147.7 MB
Events in quadrant A4,963,407971,947
Events in quadrant B5,286,303964,861
Events in quadrant C5,121,1171,040,566
Events in quadrant D7,184,308965,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221943
B0230392
C0221132
D0289282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10795490.453914%
B107951060.981936%
C10795400.370542%
D107954754.400185%

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 22002 10799 0 0 0.00% 0.00%
B 22002 10797 34 34 0.15% 0.31%
C 22002 10797 1 1 0.00% 0.01%
D 22002 10798 371 371 1.69% 3.44%

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 86269 332.03 1260 1234 256.1
A 1 162 16735 60.53 1260 1234 256.1
A 4 2 11660 40.71 1260 1234 256.1
B 4 142 107403 448.6 1247 1215 236.7
B 3 64 100527 419.55 1247 1215 236.7
B 3 209 66170 274.41 1247 1215 236.7
C 3 233 251430 880.33 1241 1252 284.2
C 13 61 8935 27.03 1241 1252 284.2
C 7 237 6707 19.2 1241 1252 284.2
D 13 122 967401 3294.43 1215 1182 293.3
D 5 222 703793 2395.63 1215 1182 293.3
D 8 195 261742 888.41 1215 1182 293.3

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