ASTROSAT CZTI

Data Quality Report

Orbit 27834

Creation date: 2024-06-27T19:44:59.321099
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/AS1A10_002T04_9000004022_27834cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27834cztM0_level2_quad_clean.evt
Size (bytes)641,301,120116,470,080
Size611.6 MB 111.1 MB
Events in quadrant A3,249,414842,633
Events in quadrant B3,365,726822,307
Events in quadrant C3,820,442772,274
Events in quadrant D8,573,816664,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134380
B0138660
C0154260
D0297060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6095881.443806%
B60961031.689633%
C60951522.493847%
D6095210534.536505%

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 7345 6095 0 0 0.00% 0.00%
B 7346 6096 3 3 0.04% 0.05%
C 7345 6095 12 12 0.16% 0.20%
D 7345 6095 2053 2053 27.95% 33.68%

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 13 254 11588 64.63 841 824 166.6
A 0 226 7278 38.75 841 824 166.6
A 3 137 7202 38.29 841 824 166.6
B 0 190 78156 508.78 816 798 152.0
B 15 32 64824 421.1 816 798 152.0
B 12 111 17646 110.81 816 798 152.0
C 3 233 622928 3451.31 786 791 180.3
C 14 238 128060 706.03 786 791 180.3
C 13 61 5423 25.7 786 791 180.3
D 1 52 6000038 38970.98 663 649 153.9
D 2 250 40557 259.23 663 649 153.9
D 2 234 20867 131.33 663 649 153.9

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