ASTROSAT CZTI

Data Quality Report

Orbit 29807

Creation date: 2024-06-27T20:07:56.641246
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_29807cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29807cztM0_level2_quad_clean.evt
Size (bytes)834,828,480101,283,840
Size796.2 MB 96.6 MB
Events in quadrant A3,274,011725,190
Events in quadrant B7,948,843680,315
Events in quadrant C3,390,558685,675
Events in quadrant D10,205,290495,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140711
B0281941
C0142941
D0348181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6875220.320000%
B687698214.281559%
C6876761.105294%
D6876284341.346713%

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 7545 6876 0 0 0.00% 0.00%
B 7546 6877 770 770 10.20% 11.20%
C 7546 6877 9 9 0.12% 0.13%
D 7546 6877 2727 2727 36.14% 39.65%

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 14049 78.11 847 832 169.2
A 3 137 8329 44.3 847 832 169.2
A 0 226 7126 37.19 847 832 169.2
B 0 189 2607510 17071.17 811 793 152.7
B 6 159 1998744 13084.41 811 793 152.7
B 0 229 88063 571.52 811 793 152.7
C 14 238 140915 742.74 808 812 188.6
C 10 22 59217 309.63 808 812 188.6
C 14 254 17014 85.89 808 812 188.6
D 7 238 7112559 46416.28 638 621 153.2
D 8 195 473086 3083.56 638 621 153.2
D 2 250 57111 368.68 638 621 153.2

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