ASTROSAT CZTI

Data Quality Report

Orbit 29787

Creation date: 2024-06-27T20:07:44.247921
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/AS1T03_291T01_9000004278_29787cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29787cztM0_level2_quad_clean.evt
Size (bytes)2,713,302,720426,286,080
Size2.5 GB 406.5 MB
Events in quadrant A15,898,4022,731,221
Events in quadrant B26,645,7972,740,961
Events in quadrant C17,480,1382,608,309
Events in quadrant D19,903,2242,539,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687975
B01030595
C0725806
D0804915

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A333442680.803743%
B333457312.192233%
C333458102.429150%
D333456191.856350%

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 45494 33349 11 11 0.02% 0.03%
B 45494 33350 91 91 0.20% 0.27%
C 45495 33350 94 94 0.21% 0.28%
D 45495 33350 371 371 0.82% 1.11%

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 72707 84.63 4098 4015 811.6
A 12 96 51325 58.29 4098 4015 811.6
A 3 137 40122 44.49 4098 4015 811.6
B 6 159 9534730 12515.61 4042 3951 761.5
B 0 229 977823 1278.87 4042 3951 761.5
B 0 190 118131 149.94 4042 3951 761.5
C 14 238 699597 771.03 3916 3938 902.2
C 3 233 677334 746.35 3916 3938 902.2
C 10 22 601232 662.01 3916 3938 902.2
D 8 195 2255895 2434.89 3944 3841 924.9
D 7 80 1168035 1258.71 3944 3841 924.9
D 2 250 508804 545.96 3944 3841 924.9

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