ASTROSAT CZTI

Data Quality Report

Orbit 26577

Creation date: 2024-06-27T19:30:39.200381
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/AS1A09_095T02_9000003846_26577cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26577cztM0_level2_quad_clean.evt
Size (bytes)615,196,80077,754,240
Size586.7 MB 74.2 MB
Events in quadrant A3,032,866532,439
Events in quadrant B3,851,390535,352
Events in quadrant C3,029,061504,430
Events in quadrant D8,334,675385,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124490
B0150020
C0124390
D0287540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5663951.677556%
B56643055.384887%
C56641111.959746%
D5664172530.455508%

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 6943 5663 13 13 0.19% 0.23%
B 6944 5664 119 119 1.71% 2.10%
C 6944 5664 3 3 0.04% 0.05%
D 6944 5664 1493 1493 21.50% 26.36%

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 8 144 135831 915.0 743 731 147.7
A 12 96 26528 174.72 743 731 147.7
A 13 254 8970 55.8 743 731 147.7
B 3 64 815874 6136.15 730 715 132.8
B 3 112 73928 551.11 730 715 132.8
B 0 189 62572 465.63 730 715 132.8
C 3 233 128993 800.45 701 707 160.3
C 14 238 116568 722.92 701 707 160.3
C 14 176 47554 292.31 701 707 160.3
D 7 80 4273892 28323.59 625 608 150.9
D 1 52 1269204 8408.33 625 608 150.9
D 2 250 288649 1909.15 625 608 150.9

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