ASTROSAT CZTI

Data Quality Report

Orbit 38459

Creation date: 2024-06-27T21:53:02.199528
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/AS1A12_018T01_9000005386_38459cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38459cztM0_level2_quad_clean.evt
Size (bytes)362,289,60091,221,120
Size345.5 MB 87.0 MB
Events in quadrant A2,825,207629,220
Events in quadrant B2,866,903636,626
Events in quadrant C2,602,886600,090
Events in quadrant D4,701,849523,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116653
B0120042
C0110252
D0175742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5319170.319609%
B5319631.184433%
C5319100.188005%
D53194077.651814%

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 7112 5320 9 9 0.13% 0.17%
B 7112 5320 46 46 0.65% 0.86%
C 7112 5320 9 9 0.13% 0.17%
D 7112 5320 370 370 5.20% 6.95%

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 390914 3214.4 603 591 121.4
A 12 189 35517 287.62 603 591 121.4
A 10 248 24140 193.93 603 591 121.4
B 5 184 253260 2230.53 595 579 113.3
B 4 232 120365 1057.4 595 579 113.3
B 15 32 40969 356.54 595 579 113.3
C 15 214 225696 1675.96 577 580 134.3
C 14 254 47864 352.02 577 580 134.3
C 4 254 20519 148.44 577 580 134.3
D 12 235 1236673 9117.13 561 544 135.6
D 13 249 531725 3917.75 561 544 135.6
D 10 118 424699 3128.37 561 544 135.6

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