ASTROSAT CZTI

Data Quality Report

Orbit 39554

Creation date: 2024-06-27T22:06:04.628113
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_9000005488_39554cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39554cztM0_level2_quad_clean.evt
Size (bytes)459,766,08091,425,600
Size438.5 MB 87.2 MB
Events in quadrant A5,064,205605,797
Events in quadrant B2,575,979648,022
Events in quadrant C4,844,103552,351
Events in quadrant D4,080,809553,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190162
B0119961
C0183531
D0164551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58453576.107784%
B5845130.222412%
C584560510.350727%
D58452434.157399%

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 7127 5846 309 309 4.34% 5.29%
B 7127 5846 4 4 0.06% 0.07%
C 7127 5846 542 542 7.60% 9.27%
D 7127 5846 253 253 3.55% 4.33%

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 15 222 2273871 18302.25 608 595 124.2
A 10 83 402690 3237.29 608 595 124.2
A 9 143 12387 94.94 608 595 124.2
B 5 255 72601 606.49 616 598 118.7
B 5 172 38152 316.32 616 598 118.7
B 12 111 15283 123.69 616 598 118.7
C 9 187 2335135 17600.1 563 565 132.6
C 15 214 232565 1749.03 563 565 132.6
C 15 208 46870 349.09 563 565 132.6
D 13 249 619507 4259.32 594 576 145.3
D 12 227 379852 2610.08 594 576 145.3
D 14 34 375189 2577.99 594 576 145.3

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