ASTROSAT CZTI

Data Quality Report

Orbit 50317

Creation date: 2025-01-16T15:26:37.091891
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/AS1C09_003T01_9000006442_50317cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50317cztM0_level2_quad_clean.evt
Size (bytes)1,151,677,44064,359,360
Size1.1 GB 61.4 MB
Events in quadrant A10,055,423463,136
Events in quadrant B5,301,786631,839
Events in quadrant C14,542,299105,902
Events in quadrant D12,232,646295,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343591
B0202271
C0475997
D0408361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485205731.719352%
B64856409.868928%
C6485552585.196608%
D6485339952.413261%

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 7555 6486 1710 1710 22.63% 26.36%
B 7555 6486 376 376 4.98% 5.80%
C 7554 6484 4639 4639 61.41% 71.55%
D 7555 6485 3079 3079 40.75% 47.48%

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 3 231 4928756 32589.91 612 596 151.2
A 3 14 617776 4081.41 612 596 151.2
A 0 98 449985 2971.8 612 596 151.2
B 4 206 1106925 7637.32 678 657 144.9
B 1 238 757867 5227.53 678 657 144.9
B 12 0 394064 2715.95 678 657 144.9
C 4 111 8525230 99710.01 287 283 85.5
C 15 197 1502803 17573.86 287 283 85.5
C 15 232 909534 10634.83 287 283 85.5
D 7 61 3840699 25353.58 520 501 151.5
D 2 37 1555920 10269.12 520 501 151.5
D 7 96 1193513 7876.45 520 501 151.5

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