ASTROSAT CZTI

Data Quality Report

Orbit 17638

Creation date: 2024-06-27T17:38:58.028102
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/AS1A05_118T02_9000002612_17638cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17638cztM0_level2_quad_clean.evt
Size (bytes)307,428,48060,675,840
Size293.2 MB 57.9 MB
Events in quadrant A2,323,406379,331
Events in quadrant B2,251,447380,374
Events in quadrant C2,249,356368,968
Events in quadrant D2,155,036367,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101770
B099610
C098950
D099860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4849100.206228%
B485070.144330%
C4850170.350515%
D4850130.268041%

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 4849 4849 3 3 0.06% 0.06%
B 4850 4850 3 3 0.06% 0.06%
C 4850 4850 0 0 0.00% 0.00%
D 4850 4850 8 8 0.16% 0.16%

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 14 237 171025 1487.22 559 549 114.6
A 0 226 4939 38.3 559 549 114.6
A 3 137 4165 31.55 559 549 114.6
B 7 220 15160 134.01 559 545 109.1
B 12 111 12728 111.71 559 545 109.1
B 11 111 11072 96.53 559 545 109.1
C 14 238 81840 639.74 536 538 127.1
C 3 233 72767 568.35 536 538 127.1
C 13 61 3799 25.66 536 538 127.1
D 13 189 68622 509.83 544 529 133.6
D 2 234 20139 146.82 544 529 133.6
D 10 70 7993 55.88 544 529 133.6

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