ASTROSAT CZTI

Data Quality Report

Orbit 34975

Creation date: 2022-03-18T07:36:18.746461
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/AS1A10_123T09_9000005012_34975cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34975cztM0_level2_quad_clean.evt
Size (bytes)467,265,60066,366,720
Size445.6 MB 63.3 MB
Events in quadrant A2,571,933408,738
Events in quadrant B3,835,123399,605
Events in quadrant C2,872,809416,650
Events in quadrant D4,492,963394,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114373
B0151152
C0118462
D0174612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557150.089750%
B55713726.677437%
C5571581.041106%
D55711683.015617%

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 9636 5573 1 1 0.01% 0.02%
B 9636 5573 300 300 3.11% 5.38%
C 9636 5573 50 50 0.52% 0.90%
D 9636 5573 136 136 1.41% 2.44%

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 10 83 70819 552.03 635 623 127.2
A 13 6 22093 168.84 635 623 127.2
A 15 223 14507 109.19 635 623 127.2
B 3 112 553937 4629.97 618 601 119.5
B 5 172 428857 3583.38 618 601 119.5
B 5 63 214004 1785.62 618 601 119.5
C 15 214 231640 1637.51 617 622 141.1
C 0 10 182646 1290.23 617 622 141.1
C 14 67 42756 298.66 617 622 141.1
D 8 195 1317786 8897.86 608 591 148.0
D 2 249 228262 1537.95 608 591 148.0
D 1 47 149665 1007.02 608 591 148.0

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