ASTROSAT CZTI

Data Quality Report

Orbit 01784

Creation date: 2024-06-27T14:12:39.274573
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/AS1G02_020T01_9000000296_01784cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01784cztM0_level2_quad_clean.evt
Size (bytes)1,301,198,400105,886,080
Size1.2 GB 101.0 MB
Events in quadrant A9,921,003677,746
Events in quadrant B9,473,003688,901
Events in quadrant C10,030,832661,602
Events in quadrant D9,482,656652,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348672
B0334742
C03518111
D0335572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A756780.105722%
B756740.052861%
C7565370.489095%
D75671131.493326%

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 7927 7568 407 407 5.13% 5.38%
B 7927 7568 348 348 4.39% 4.60%
C 7927 7567 433 433 5.46% 5.72%
D 7926 7567 434 434 5.48% 5.74%

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 0 231 717952 1231.07 2401 2416 581.2
A 10 2 11363 15.39 2401 2416 581.2
A 8 255 10820 14.46 2401 2416 581.2
B 0 220 56790 92.83 2473 2482 585.1
B 0 244 23549 36.01 2473 2482 585.1
B 0 234 14063 19.79 2473 2482 585.1
C 8 208 1125969 1786.12 2253 2337 629.1
C 1 192 58035 88.54 2253 2337 629.1
C 10 82 56766 86.52 2253 2337 629.1
D 7 85 604422 882.97 2202 2281 681.9
D 13 72 226742 329.15 2202 2281 681.9
D 13 169 169754 245.58 2202 2281 681.9

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