ASTROSAT CZTI

Data Quality Report

Orbit 17532

Creation date: 2024-06-27T17:37:41.082126
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/AS1A05_140T01_9000002596_17532cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17532cztM0_level2_quad_clean.evt
Size (bytes)284,094,72053,582,400
Size270.9 MB 51.1 MB
Events in quadrant A1,953,992337,906
Events in quadrant B2,085,656335,586
Events in quadrant C2,060,642324,553
Events in quadrant D2,209,513321,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087631
B090491
C088781
D095741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4304190.441450%
B4304451.045539%
C4304390.906134%
D4304701.626394%

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 4304 4304 0 0 0.00% 0.00%
B 4304 4304 13 13 0.30% 0.30%
C 4304 4304 0 0 0.00% 0.00%
D 4304 4304 59 59 1.37% 1.37%

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 15 174 6346 56.87 506 497 102.8
A 0 226 4564 39.54 506 497 102.8
A 3 137 3807 32.18 506 497 102.8
B 10 245 83476 857.12 503 490 96.8
B 5 172 17876 179.57 503 490 96.8
B 12 111 11201 110.63 503 490 96.8
C 14 238 75215 657.99 482 486 113.6
C 3 233 72461 633.75 482 486 113.6
C 5 218 28685 248.29 482 486 113.6
D 13 189 196360 1649.43 488 474 118.8
D 5 222 127453 1069.21 488 474 118.8
D 13 168 20704 170.34 488 474 118.8

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