ASTROSAT CZTI

Data Quality Report

Orbit 42977

Creation date: 2024-06-27T22:46:28.787213
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/AS1T05_148T01_9000005838_42977cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42977cztM0_level2_quad_clean.evt
Size (bytes)482,495,040111,853,440
Size460.1 MB 106.7 MB
Events in quadrant A3,495,721867,273
Events in quadrant B7,833,751547,577
Events in quadrant C2,953,999842,137
Events in quadrant D3,153,242749,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140552
B0270416
C0118062
D0126642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5449641.174527%
B5448221440.638767%
C544830.055066%
D5448731.339941%

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 7182 5450 29 29 0.40% 0.53%
B 7181 5449 1756 1756 24.45% 32.23%
C 7181 5449 0 0 0.00% 0.00%
D 7181 5449 69 69 0.96% 1.27%

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 10 83 585406 3501.31 706 690 167.0
A 15 237 102570 610.06 706 690 167.0
A 10 255 43244 254.82 706 690 167.0
B 4 81 5206275 41324.32 566 553 126.0
B 4 171 327692 2596.91 566 553 126.0
B 0 186 46716 366.45 566 553 126.0
C 15 214 225558 1239.17 686 690 181.5
C 0 239 25012 134.03 686 690 181.5
C 14 254 11983 62.23 686 690 181.5
D 12 6 118416 628.78 680 653 187.3
D 1 47 111706 592.95 680 653 187.3
D 13 249 110839 588.32 680 653 187.3

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