ASTROSAT CZTI

Data Quality Report

Orbit 26837

Creation date: 2024-06-27T19:33:31.131555
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_145T01_9000003866_26837cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26837cztM0_level2_quad_clean.evt
Size (bytes)506,465,28099,377,280
Size483.0 MB 94.8 MB
Events in quadrant A3,359,072662,067
Events in quadrant B3,738,710673,382
Events in quadrant C3,239,478633,399
Events in quadrant D4,589,298616,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134840
B0148430
C0130020
D0176090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6073470.773917%
B60741071.761607%
C6074811.333553%
D60742243.687850%

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 7418 6075 1 1 0.01% 0.02%
B 7419 6076 35 35 0.47% 0.58%
C 7419 6076 1 1 0.01% 0.02%
D 7419 6076 185 185 2.49% 3.04%

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 13 159589 962.96 827 816 164.9
A 13 254 8894 48.99 827 816 164.9
A 12 96 7244 38.99 827 816 164.9
B 3 64 282892 1838.8 818 798 153.4
B 0 189 161926 1050.29 818 798 153.4
B 0 190 39591 252.87 818 798 153.4
C 14 238 128725 703.11 785 794 181.9
C 15 208 26738 142.59 785 794 181.9
C 3 233 11925 61.18 785 794 181.9
D 7 80 1341876 7103.94 788 771 188.8
D 1 52 224397 1184.57 788 771 188.8
D 2 250 44349 230.84 788 771 188.8

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