ASTROSAT CZTI

Data Quality Report

Orbit 20905

Creation date: 2024-06-27T18:20:59.238654
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/AS1A06_002T03_9000003080_20905cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20905cztM0_level2_quad_clean.evt
Size (bytes)862,139,52098,092,800
Size822.2 MB 93.5 MB
Events in quadrant A3,807,606648,736
Events in quadrant B4,048,604648,696
Events in quadrant C3,541,880641,258
Events in quadrant D14,214,727518,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160562
B0166332
C0151672
D0472632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73531802.447980%
B73531962.665579%
C73541642.230079%
D7354396753.943432%

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 7698 7355 26 26 0.34% 0.35%
B 7698 7355 52 52 0.68% 0.71%
C 7699 7356 0 0 0.00% 0.00%
D 7699 7356 3997 3997 51.92% 54.34%

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 6 16 145630 796.85 905 886 181.6
A 5 16 130344 712.7 905 886 181.6
A 15 174 54039 292.62 905 886 181.6
B 7 220 306232 1769.04 899 875 172.6
B 3 64 98469 565.4 899 875 172.6
B 0 230 39129 221.62 899 875 172.6
C 14 238 136028 661.38 872 878 204.3
C 13 61 6095 25.53 872 878 204.3
C 10 91 5464 22.44 872 878 204.3
D 1 239 7904752 43568.51 748 726 181.4
D 1 52 2864605 15786.25 748 726 181.4
D 1 20 583774 3213.87 748 726 181.4

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