ASTROSAT CZTI

Data Quality Report

Orbit 39394

Creation date: 2024-06-27T22:04:02.897562
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_9000005470_39394cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39394cztM0_level2_quad_clean.evt
Size (bytes)443,220,48093,453,120
Size422.7 MB 89.1 MB
Events in quadrant A3,074,867658,922
Events in quadrant B2,759,378671,063
Events in quadrant C2,908,262631,014
Events in quadrant D7,200,663452,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127083
B0123662
C0123822
D0253392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5953160.268772%
B5953200.335965%
C595330.050395%
D5953158026.541240%

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 7266 5954 3 3 0.04% 0.05%
B 7266 5954 11 11 0.15% 0.18%
C 7266 5954 1 1 0.01% 0.02%
D 7266 5954 1371 1371 18.87% 23.03%

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 467114 3502.3 653 640 133.2
A 13 248 62076 461.26 653 640 133.2
A 13 254 9675 67.84 653 640 133.2
B 5 172 182379 1439.36 647 629 126.3
B 12 111 15983 121.6 647 629 126.3
B 11 111 14611 110.73 647 629 126.3
C 15 214 271258 1824.76 634 634 148.3
C 9 187 93217 624.27 634 634 148.3
C 14 254 52696 351.04 634 634 148.3
D 12 235 4344518 30401.58 572 555 142.9
D 2 249 341509 2386.19 572 555 142.9
D 13 249 188798 1317.43 572 555 142.9

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