ASTROSAT CZTI

Data Quality Report

Orbit 34637

Creation date: 2022-02-23T12:09:07.704679
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_008T01_9000004956_34637cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34637cztM0_level2_quad_clean.evt
Size (bytes)404,078,40065,574,720
Size385.4 MB 62.5 MB
Events in quadrant A2,269,280429,467
Events in quadrant B3,206,457420,170
Events in quadrant C2,482,399420,546
Events in quadrant D3,961,727387,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010711
B01088
C010616
D01087

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108651130
B0140281524
C0112961287
D0195044656

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4763110.230947%
B47342435.133080%
C4734350.739332%
D44092826.396008%

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 7277 5054 1 1 0.01% 0.02%
B 7277 5061 159 159 2.18% 3.14%
C 7277 5054 21 21 0.29% 0.42%
D 7277 4708 218 218 3.00% 4.63%

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 41381 360.47 569 559 113.2
A 9 143 18859 161.59 569 559 113.2
A 13 254 8358 68.87 569 559 113.2
B 5 172 939611 8890.74 550 536 105.6
B 4 171 54047 506.62 550 536 105.6
B 5 200 22610 208.99 550 536 105.6
C 15 214 200460 1607.89 538 541 124.3
C 0 10 92660 740.89 538 541 124.3
C 14 67 72659 580.02 538 541 124.3
D 8 195 775277 6392.66 488 474 121.2
D 12 235 531372 4380.28 488 474 121.2
D 13 249 331091 2727.82 488 474 121.2

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