ASTROSAT CZTI

Data Quality Report

Orbit 11118

Creation date: 2024-06-27T16:08:31.788272
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_071T02_9000001620_11118cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11118cztM0_level2_quad_clean.evt
Size (bytes)562,426,56063,725,760
Size536.4 MB 60.8 MB
Events in quadrant A4,271,526370,239
Events in quadrant B4,034,714367,780
Events in quadrant C3,104,458376,428
Events in quadrant D5,172,483351,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168133
B0161222
C0136482
D0197962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66402543.825301%
B66402874.322289%
C6640310.466867%
D66405388.102410%

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 7680 6641 164 164 2.14% 2.47%
B 7680 6641 174 174 2.27% 2.62%
C 7680 6641 0 0 0.00% 0.00%
D 7680 6641 461 461 6.00% 6.94%

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 8 5 1070608 6509.6 809 790 164.3
A 8 15 44944 268.67 809 790 164.3
A 14 254 11740 66.63 809 790 164.3
B 4 239 707613 4554.82 814 794 155.2
B 3 189 69445 442.39 814 794 155.2
B 15 204 38127 240.58 814 794 155.2
C 13 61 5807 26.88 795 801 186.2
C 12 4 4109 17.77 795 801 186.2
C 3 202 1909 5.95 795 801 186.2
D 10 253 1241473 6728.99 751 729 184.4
D 1 52 440067 2382.68 751 729 184.4
D 13 249 200602 1083.98 751 729 184.4

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