ASTROSAT CZTI

Data Quality Report

Orbit 15092

Creation date: 2024-06-27T17:03:38.427150
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/AS1G08_028T01_9000002220_15092cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15092cztM0_level2_quad_clean.evt
Size (bytes)495,455,04098,089,920
Size472.5 MB 93.5 MB
Events in quadrant A3,479,370620,035
Events in quadrant B3,635,117639,925
Events in quadrant C4,044,049616,242
Events in quadrant D3,358,335593,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150253
B0152052
C0165672
D0149892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7179700.975066%
B7179881.225797%
C7179751.044714%
D7179620.863630%

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 9185 7180 0 0 0.00% 0.00%
B 9185 7180 0 0 0.00% 0.00%
C 9185 7181 0 0 0.00% 0.00%
D 9185 7181 6 6 0.07% 0.08%

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 12 189 21669 115.38 899 881 180.2
A 0 226 7817 38.5 899 881 180.2
A 12 194 6554 31.49 899 881 180.2
B 3 64 109421 624.14 901 878 173.9
B 12 111 21124 116.42 901 878 173.9
B 11 111 18739 102.7 901 878 173.9
C 3 233 334877 1624.21 880 885 205.6
C 3 9 269918 1308.31 880 885 205.6
C 13 61 6240 26.04 880 885 205.6
D 2 234 25165 113.79 877 852 213.7
D 10 70 21792 98.01 877 852 213.7
D 13 104 21334 95.86 877 852 213.7

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